A National Gallery restoration that repudiates earlier National Gallery restorations
When major museums acquire major pictures, they invariably take additional technical and artistic possession of them through restorations. By transforming pictures’ appearances, museum staffs lay claim to an exclusive up-to-the-minute knowledge of a picture’s material and artistic traits that renders all earlier studies obsolete and activates use of the possessive “our” – as in “our Duccio” or “our Artemisia Gentileschi”. For much-criticised museums like the National Gallery and the Metropolitan Museum of Art, New York, the introduction of a well-preserved picture within a collection risks spotlighting in-house restoration damage – as might well have happened, for example, had the Met exhibited its newly acquired, fabulously well-preserved Velazquez portrait Juan de Pareja and its Perino del Vaga The Holy Family with the Infant St John the Baptist before restoring them. Today, the National Gallery seeks to counter long-standing criticisms by allowing its restorers to present their own interventions and purposes through broadcast social media. In a press release of 2 August 2019, the gallery’s Director of Collections and Research, Caroline Campbell, said of a restored panel painting:
“The National Gallery is one of just a handful of institutions across the world that is able to carry out painting conservation of this complexity. As this work has been carried out behind closed doors, this display is an opportunity to share this expertise with the public and also to celebrate our conservation skills, in a similar way to how we shared the conservation of our Artemisia Gentileschi self-portrait via a series of films.”
Such hubristic public relations manoeuvres are risky. As Michel Favre-Felix, painter and President of ARIPA (Association Internationale pour le Respect de l’Intégrité du Patrimoine Artistique), demonstrates below, restoration errors are still to be encountered among the nation’s pictures and the restorers’ own explanations leave conspicuously unaddressed questions. [M.D.]
Above, Fig. 1: Left, the National Gallery’s Artemisia Gentileschi Self-portrait as Saint Catherine of Alexandria, as presented by the Paris-based auctioneer Christophe Joron-Derem for the 19 December 2017 auction; right, as subsequently restored by the National Gallery.
Michel Favre-Felix writes:
Artemisia Gentileschi’s Self-portrait as Saint Catherine of Alexandria, which was acquired two years ago for £3.6 million (a record for the artist), has already become a new iconic painting of the National Gallery. To the appeal of a self-portrait by the most celebrated female painter of the 17th century, the picture (above, Fig. 1) adds a telling symbolic aura. Commentators have not failed to underline that this martyred saint Catherine, holding the instrument of her ordeal – the miraculously broken spiked wheel – persevering in her faith in the midst of persecution and rewarded with eternal salvation, mirrors the shattering life-story of Artemisia herself, young victim of a rape, maintaining her testimony under torture and finally triumphing in her female artist career. This emblematic portrait is the central feature in the present major exhibition of her work – the first ever in UK – “Artemisia”, National Gallery, London WC2, until 24 January 2021.
Just two weeks after announcing the purchase, in July 2018, the National Gallery began posting on YouTube the first of what became a long series of videos of the restoration in progress (see the list at the end of this article). No fewer than four of them deal with the picture’s cleaning – the need for it (which will be discussed below); the expected effects; its progress and its results.
Such a pedagogic/celebratory (to re-use Caroline Campbell’s expression) public programme is unprecedented. Hitherto, if the Gallery decided to communicate an account of one of its restorations it usually appeared in its scholarly Technical Bulletin, with a strong emphasis on the scientific analysis of the picture’s material structure and a minimal part, if any, given to the hands-on cleaning process itself. The set of YouTube videos exactly reverses that relationship.
As in political discourses, vocabulary plays a key role and carries far-reaching meanings. Old traditional terms might surface, as when the curator, Letizia Treves, observes rather innocently that ‘the picture is quite dirty’, expressing her expectations from its forthcoming cleaning (in Who was… 4:18). ‘Dirty’ is the customary loaded codeword used to justify a total varnish removal. It leaves no room for investigations or nuances: ‘dirt’ cannot reasonably be even partially kept on a painting; it must be entirely wiped out. (See Fig. 1, above, left, for the pre-restoration condition.)
Larry Keith’s expressions are purposefully different. He not only restrains himself from using the loaded and derogatory, non-scientific term ‘dirt’ to describe what is in reality a coat of old varnishes, but he takes care to amend the ambiguous twin-word of ‘cleaning’, by changing its sense, at the start of his talk (in Cleaning… 0:25): ‘Cleaning meaning the… [short pause] …reduction of the old discoloured degraded varnishes’ (“reduction” being the operative word). This singular short pause in his otherwise fluent and dynamic speech is eloquent.
A closer look shows that this change of definition has matured over several years. The cleaning of the Virgin of the Rocks, in 2009/2010, was already presented as a ‘reduction’ [Endnote 1], although this peculiar aspect went rather unnoticed at the time [2]. Earlier, when commenting on the restoration of Guido Reni’s The Adoration of the Shepherds in 2007, Larry Keith mentioned that to clean might be ‘to remove or reduce the old discoloured varnishes’ [3]. If cleaning now means a reduction rather than an elimination, this new position has generated a number of unaddressed questions.
1) First, what does this policy change reveal about the systematic total cleanings made in the past? What happened to the previous certainties on which the gallery’s conservation policy was grounded and which had served to authorise its restorations? Since the post-Second World War ‘Great Picture Cleaning Controversy’, the gallery’s conservation department maintained, against its national and international critics, that a complete removal of varnish was the only way to establish the true, objective, unfalsified state of a painting, and to recover as closely as possible its original appearance as created by the artist. This was not held to be one option among others. It was the inescapable and inevitable conclusion of methodical reasoning itself. The leading proponent of this policy, the de facto chief restorer, Helmut Ruhemann, went so far as to list nine ‘main Arguments against Part Cleaning’ in a crucial chapter of his 1968 book The Cleaning of Paintings (pp. 214-217), which had set the Gallery’s official institutional methodology for more than half a century – and still exerts an influence.
Part-cleaning was not only ruled out in theory but was held to be both unfeasible and deceiving in practice. Ruhemann’s strongest and most persuasive arguments were technical ones. Using the authority of the practitioner, he asserted that a reduction of the varnishes regularly produces an uneven result leaving disruptive and disfiguring ‘patches’ scattered all over the paint. He claimed that a half-way cleaning was arbitrary and inevitably imprecise, the restorer being ‘condemned to groping in the dark’. He stressed that, if there was some old varnish left, it would be impossible to suppress all the faulty and distorting old retouching that might lie underneath. Moreover, he added that the new retouches would never correctly match the still imperfectly cleaned paint.
This argumentation, unchallenged for decades, happens to have been refuted by Larry Keith’s recent practical demonstration. Although Keith used traditional means (no revolution in tools or solvents or monitoring is used in the Gallery) his ‘reduction’ did not generate the Ruhemann-predicted failures: it neither failed to suppress the old retouches nor to avoid uneven ‘patches’ – nor even failed to achieve perfectly matching indiscernible new retouches.
2) What is the reason for adopting partial cleaning today? On the one hand, in hindsight, we can see that the previous policy of total cleaning was based on spurious arguments but, on the other, it is striking that no revised or new justification is provided in support of the present policy.
Why is it now considered to be appropriate, required – or even essential – to keep a part of the old so-called ‘degraded and discoloured’ varnishes on this painting? Is it to serve as a guarantee for the safety of the paint and possible original glazes underneath when subjected to the cleaning with solvents? Does this last layer of old varnish bear a meaningful aesthetic and/or historic value that ought to be preserved? Does the remnant of the surface coating constitute part of the artistic authenticity of the work of art? Keith provides no indication at all. A full range of arguments in favour of part-way cleaning have been put forward elsewhere since the 1950s by connoisseurs, critics and art historians but Keith refers to none.
In reality these questions concern a majority of works because this portrait is not at all an exceptional case. It was, at the time of its acquisition, in a ‘standard’ condition that is common to so many paintings from past centuries that have been subjected to restorations: from the Gallery’s report it turns out that its surface bore the usual old retouching, and its canvas, already relined as was customary in the past, had since suffered a small tear and will be relined anew.
Acknowledging the ‘reduction’ of the varnishes as the best possible care for this painting implies/concedes that it should have been similarly prescribed and applied successfully to so many comparable paintings, affected by the same usual damages, but which were radically cleaned at the National Gallery.
3) Larry Keith never explains in his videos why he chooses to thin rather than to remove the coat of ‘degraded’ varnish, as was the rule before. He simply strives to show why the old varnish needed a treatment and to demonstrate that he achieved ‘key improvements’ on the test areas where it has been reduced.
About the state of the varnish he draws a distinction, not without reason, between two effects: ‘these old varnishes when they degrade, they turn yellow and they turn foggy…’
That is true in a general way, but it is precisely from there that reflections should begin, because while the first is the natural, predictable, regular evolution of traditional materials, the latter is an unfortunate degradation that preventive care could avoid.
Above, Fig. 2: Screen capture from the video “Cleaning…” – See the full linked-list of videos below.
On this first issue, that of yellowing, the explanations are especially puzzling:
[in Cleaning… 1:27] “You see that where the varnishes have been reduced, the overall tonalities of the picture are much less yellow. The fingers [on the left] are emerging rather pink, instead of this kind of yellow colour [on the right] and I am sure that will become more evident as we move across the picture…”
These comments are puzzling because they hardly fit with what is shown. The old varnish did not turn the skin tonalities markedly and disturbingly yellow (compare the back of the hand on the right with the old varnish on, to the ‘reduced’ one on the fingers on the left at Fig. 2 above), and it is indeed anything but ‘evident’ that it distorted the perception of the colours. It may be recalled that in December 2017, during the presentation of the painting before its auction in Paris, the expert Eric Turquin praised the ‘subtle pinks’ – in his own words – he had no trouble distinguishing in the flesh tones of the portrait with the old varnish on [4].
Above, Fig. 3: Photograph (detail) from the Hyperallergic site, 12 July 2018, showing the “Artemisia” exhibition curator, Letizia Treves, facing the self-portrait before cleaning began. Although top lighting caused a pale reflection on the canvas, lightening the dark tones, it can be seen here that Artemisia’s flesh tones are not so much yellowish as close in their pinkness to the curator’s own natural colouring.
Above, Fig. 4: The restorer Larry Keith, examining the painting before cleaning began, as shown on BBC News 6 July 2018.
The above photos published in July 2018, at the very start of the intervention, in which spectators are present confirm that the variety of colours in the painting was clearly perceptible: the shades of pink of the face, the cream tone of the headscarf, the Naples yellow of the palm leaf or the ochre of the wood read easily and naturally. One can observe that there was no oppressing monochrome veil distorting the shades of the portrait, which were quite close to the natural skin tones of the viewers, as the photographs testify (Figs. 3 and 4).
Surprisingly, if not tendentiously, Keith even evokes an ‘accumulation of varnishes’, which he ventures would result from ‘many restorations that have probably occurred’ in the past (in Cleaning… 4:35). ‘Many’ is merely hypothetical since the history of this painting is totally unknown between the years of its creation, circa 1615-1617, and the 1940s when it resurfaced, only to be quietly kept in a French family (Pes, J. 2018).
Looking at the photographs of the initial state, it is difficult to deduce a superimposition of many added layers. Fortunately, this will be checked since Keith has announced that ‘minuscule samples [will] help us understand the layers structure of the accumulation of varnishes’ (in Cleaning… 4:35). Fine. It will be of great interest for the public and the experts that the result of this investigation by the laboratory be disclosed: how many layers of old varnishes? To what total thickness? Until these results are established and cited the idea of an ‘accumulation’ of layers of varnish will remain a puzzling assumption.
4) Beside the issue of yellowing – that he admitted not to be ‘evident’ – Keith places a greater emphasize on the second, undisputable, aspect of the picture condition, that of the varnish getting foggy. This loss of its transparency is, by contrast, plainly documented.
Even during the presentation at the 2017 auction in Paris, while the subtlety of the colours was praised, the ‘dullness of the varnish’ was nonetheless underlined and attributed to the fact that the painting had remained in the same family for several generations.
The video illustrates the consequences of this phenomenon (in Cleaning… from 1:40):
“… where [the foggy varnishes] are over the darker tones, the darker tones become quite a bit lighter. You can see that here, with that sort of hazy presence. And whereas down here where I started reducing the old varnishes, you can see the darker colours are much darker and the range from light to dark is much enhanced. And I think this helps you understand how [Artemisia] has laid out the folds, and helps you understand what is in front of what.
“…I think the thing here [in the ‘reduction’ in progress] that is most significant and really very rewarding is to see now the range from light to dark, which [Artemisia] has used, and her modelling of forms, which gives this sculptural presence.”
Indeed, Artemisia’s artistic expression rests on the illusion of spatial depth and on the convincing impression of three-dimensional figures. And this pictorial achievement is only displayed when the half-tones, dark values and contrasts have their full effect, which requires a good transparency of the varnish final layer.
It is hence plainly justified to try to regain this fundamental quality. However, in the case of this painting, such faint cloudiness is a common and rather benign alteration caused by humidity (that is to say, by a lack of prevention from its keepers). Physically, this phenomenon results from the scattering of light – not exactly on the ‘varnish’s own kind of fine cracks’ as it is said rather simplistically in the video – but on a multitude of micro-fissures, much smaller than usual cracks, that have developed within the varnish film at a microscopic scale that is invisible to the naked eye.
Above, Fig. 5: Above, Fig. 5: detail of Artemisia’s arm, showing un-thinned (slightly dull) varnish on the right and thinned varnish on the left.
As can be seen on the video, the thinning of the varnish has cleared the cloudy effect and has thus enhanced saturation and contrasts [above, Fig. 5]. Yet, the cause/effect relationship is not that simple. The dissipation of the hazy opacity is the result of a specific physical process: it comes from the ‘closing’ of the micro-fissures, which is obtained through the momentary softening and swelling of the varnish film when suitable solvents are applied to it. Once the solvent has evaporated, the micro-fissures have closed and so, vanished. Since the ‘reduction’ was done with solvents, their penetration into the varnish film provoked the swelling/closing result. Thus, this was a linked side-effect and it would not have been necessary to thin the entire varnish layer for that to happen. For this kind of light haziness, a simple exposure of a varnish surface to an appropriate solvent, at much lower levels – i.e. ethanol in form of vapours – without any ‘reduction’, could have produced the same positive result (Pfister, P. 2011, Demuth, P. 2001): the saturation of colours; the in-depth setting of the figure; the sculptural modelling created by Artemisia, would all have been recovered.
Of course, when such a minimal treatment is chosen, the tonality of the varnish remains unchanged, since its thickness is undisturbed even as its transparency is regained.
Knowing this, we realize that there is confusion between the two results. In truth, a physical reduction was not essential to recover the range of values from light to dark and modelling of forms intended by the artist, which could have been achieved otherwise. Essentially, the thinning of the varnish was used principally and specifically to obtain the ‘much less yellow’ overall tone. This result is held – in Larry Keith’s account – to be such an obvious improvement as to require no further justification. Yet, it does – and we see below why it needs questioning.
5) The transparency is a basic undisputed requirement for this varnish (as for any other). But what is the justification for making it ‘much less yellow’?
When we leave aside our own era’s cultural preferences and consider the materials and varnishing practices that prevailed in the XVIIth century, we realize that the (disparaged) ‘old varnish’ found on this painting had the best chance of resembling the original finished appearance as made by Artemisia herself.
Above, Fig. 6: A section of de Mayerne’s text (Folio 151r) mentioning Artemisia Gentileschi and her varnish.
Throughout these supposedly informative and instructive videos it is striking that no reference is ever made to the kind of varnish that would have been used by the artist herself, or, even, to those that were common in her circle and time in Italy. This omission is hard to justify since relevant historical and technical references have survived and are accessible. For example, Turquet de Mayerne’s manuscript notebook (written between 1620 and 1646), which is the main historic testimony and source of information on the painting techniques of this period, contains a famous reference to an ‘amber varnish’ [5], ascribed to both Artemisia (active c. 1610-1653) and her father Orazio Gentileschi (active c. 1587 -1639) – see Fig. 6, above. De Mayerne specifies that this varnish had a strong reddish tone and was used by the instrument makers to varnish lutes [6].
It should be borne in mind that, at that time, in the absence of precise identification, the term ‘amber’ (otherwise called ‘c(h)arabe’) encompassed a group of resins that were close by their consistency, colour, workability and effect – and among which were chiefly the different semi-fossil resins that we now classify as copals, which range from semi-hard to hard and are easier to dissolve than true fossilized amber (Leonard et al. 2001, Holmes, M. 1999).
Furthermore, the expression amber varnish ‘coming from Venice, with which they varnish lutes’, added in the passage on Orazio (Folio 9v), most probably indicates a ready-made product. At that time in Italy many varnish formulations were no longer made in the artists workshops but prepared and sold by colours merchants. The painter Gian Battista Volpato quotes the ‘amber varnish’ as one of them [7]. De Mayerne states that a so-called ‘Oil of Amber from Venice’ (that is, a fat varnish made of ‘amber’ dissolved in a possibly larger proportion of oil), which he supposes to be the one used by Orazio, was sold in every Italian colour shop [8]. The main point is that these prepared varnishes formed a dry film that approached the legendary hardness of amber and had a similar golden-brassy colour. Some rosin (colophony) could be added, which was useful for improving the working properties of the mixtures (Leonard et al. 2001). Its marked orange hue would also increase the warm tonality of the whole – see Fig. 7 below.
Above, Fig. 7: Colophony (or rosin, resinous part remaining after the essential oil has been extracted from the balsam of Pinus maritima Lamb. by distillation.)
It is mentioned that Artemisia mixed her ‘amber’ varnish with oil and spread the blend as an intermediary layer upon the already dried parts of her work in progress, before continuing to paint (Folio 151r). This method, commonly called ‘oiling-out’, has three benefits for reworking: it brings back the initial saturation of the first colours that might have turned dull when drying; it enables a fluent application of the later colours; and, it promotes their physical adhesion to the ones beneath.
Concerning Orazio, de Mayerne notes that he used to add a drop of ‘amber’ varnish directly to his colours on his palette – especially to the ones of the flesh tones – in order to make them more ductile and quicker to dry (Folio 9v).
Was it also chosen as final varnish? The use of the same compound for mixing with colours, for intermediary ‘oiling-out’ and for final varnishing is indeed consistent with what is known of painters’ practices at the time. Examinations of paintings by Caravaggio (of whom Orazio was a disciple) have shown that remains of his final varnish – resin in oil – were similar to the ‘oiling-out’ layers found in his paint structure (Arciprete, B. 2004).On the same folio (151r) where de Mayern mentions Artemisia’s oiling-out method, he reports on another ‘charabe’ varnish, which can be used ‘for varnishing and for mixing on the palette with the colours’ [9].
Moreover, a discovery made by the Getty Conservation Institute in 2000 confirms that Orazio also adopted an ‘amber type’ varnish of his final coating. Found on one of his painting (Lot and his Daughters, J. Paul Getty Museum, Los Angeles) executed about 1622, this rare original varnish proved to be composed of Manilla copal and rosin, precisely (Leonard et al. 2001) [Figs. 7 and 8].
Above, Fig. 8: Manilla Copal (from Agathis dammara Lamb.)
This tangible historical/material evidence of what was an ‘amber-like’ formulation provides a precious testimony of its visual effect on the picture: it displayed a notable warm golden tone over the parts where it was still present (see Figs. 9 and 10 below). Given that Artemisia learnt to paint in her father’s studio, it is beyond doubt that Orazio would have shared both his materials and his practices with his daughter.
Above, Fig. 9: The effect of Orazio’s varnish on the sky of his Lot and his Daughters (in The Burlington Magazine’s article, Vol CXLII n°1174, p.5.)
Above, Fig. 10: Macro-photograph of the varnished sky. Note the bright blue colour of the paint that appears in some spots where the ‘amber-like’ varnish is missing (from the same Burlington Magazine article, p.9.)
In addition to those clues, there is the certainty that Artemisia’s varnish could only have been composed with resins among those of her time (the end of 16th/ first half of 17th centuries): sandarac; oleoresins balsams from the silver fir, the larch or the spruce; colophony; mastic; copals, with or without oil [10] (Figs. 7, 8, 11 and 12). Reconstructions of historical recipes with such ingredients, prepared and applied following traditional methods are converging to show that they provided a natural warm tone – a ‘golden glow’ – that moreover increased surprisingly quickly (Favre-Félix, M. 2017, Carlyle, L. 2005, CCI 1994) (Fig. 13).
Above, Fig. 11: Strasbourg turpentine (balsam – oleoresine – of the silver fir, Abies pectinata DC. – from Kremer Pigmente.)
Above, Fig. 12: Sandarac (from Tetraclinis articulata Mast.)
Above, Fig. 13:As an example, the reconstruction of an historical recipe, using one resin and one oleoresin – a type that became increasingly prevalent from the end of the 16th and throughout the 17th centuries – showed a notable increase of its natural coloration within a short time.
Thus, there lies a major contradiction of modern restoration: the profession asserts a strict adherence to the scientific study of the artists’ materials and techniques, but continues to ignore the technical characteristics of the varnishes that are known to have been used in those centuries. Further, while it aims to present paintings as close as possible to the artists’ conception it still declines to take into account how their paintings had once looked with their original final layer on, and it persists in eliminating the ‘yellow tone’ of any varnish encountered on old master paintings.
CODA:
A last video deals with the significant choice of a frame for Artemisia’s self-portrait. The Head of Framing, Peter Schade, points out that an authentic frame from the 16th century – wood-carved, painted or gilded – will always surpass any copy of it, even those that look to be perfect reproductions. He makes the following crucial remark [Choosing… 8:45]: “We always carry the baggage of modernity, of our time… And that gets always in some way transferred into reproduction frames. Usually, we don’t see it now but you can look it back at the history of frame reproductions, in the gallery as well, and [see that with] most reproduction frames, after twenty, thirty years they don’t match up to originals.”
Larry Keith had then to admit – albeit in carefully chosen words – that the same rule of unwilling, modern distortion applies to restoration:
“[9:12] …It is the same thing about how we… decisions we make about restoration itself, you know. We think we try to be… I guess what we can say now, is that we are very transparent about the decision-making process but it’s definitely an interpretation all the way down the line”.
Restoration being a contemporary “interpretation” of the work of the past, transparency is essential, and transparency implies clear explanations for the present and for the older interventions. But, strikingly, Larry Keith has not explained in any way the main justification for reducing rather than eliminating surviving varnishes. With regard to the use of retouching – e.g. in the reconstruction of the cropped top of the crown – his presentation and discussions are fair (see Reconstructing… and Retouching…) But on matters of cleaning and varnish this essay’s conspicuous technical, aesthetic and historical documentary omissions testify to an enduring institutional avoidance of transparency on the most vital artistic questions of art conservation at the National Gallery.
Above, Fig. 14: Artemisia’s Self-portrait, left, as in 2017 at auction; centre, same state but as provided by the National Gallery to the press in July 2018, before cleaning; and, right, as at the end of 2018 at the National Gallery, after cleaning and restoration.
Michel Favre-Felix, 9 October 2020.
THE NATIONAL GALLERY RESTORATION VIDEOS:
1) Starting the restoration of Artemisia Gentileschi’s ‘Self Portrait’ – Now entitled: “The art restoration plan for Artemisia Gentileschi’s ‘Self Portrait'” – as posted on the 20th of July 2018.
2) Cleaning Artemisia Gentileschi’s ‘Self Portrait’ – as posted on the 27th of July 2018.
3) ‘It’s such a 17th century thing to do’ | Cleaning Artemisia Gentileschi’s ‘Self Portrait’ – as posted on the 3rd of August 2018.
4) Who was Artemisia Gentileschi? – as posted on the 20th of August 2018.
5) Finishing the cleaning | Cleaning Artemisia’s ‘Self Portrait’ – as posted on the 30th of August 2018.
6) Repairing a 17th century canvas – as posted on the 10th of September 2018.
7) Applying the moisture treatment – as posted on the 21st of September 2018.
8) Finishing the relining – as posted on the 2nd of October 2018.
9) Reconstructing the unusual composition of Artemisia’s ‘Self Portrait’ – as posted on the 9th of October 2018.
10) Retouching a 17th century painting – as posted on the 13th of November 2018.
11) Choosing a frame – as posted on the 26th of November 2018.
12) Framing Artemisia – as posted on the 14th of December 2018.
ENDNOTES:
[1] “Indeed not all the old varnish was removed – it was simply reduced to a level which helps us to fully appreciate the painting.” (Larry Keith – Restoring Leonardo, National Gallery website.)
[2] “By removing the ugly varnish…” Jonathan Jones commenting on this cleaning in The Guardian, 13 July 2010. When reviewing the National Gallery’s restoration of its Leonardo Virgin of the Rocks, Jones expressed delight that the painting had been “freed from an amber prison”.
[3] National Gallery Podcast: Restoring Reni’s ‘Adoration of the Shepherds’, 1 :48.
[4] ARTECENTRO – Artemisia Gentileschi, Sainte Catherine d’Alexandrie, vente le 19 décembre 2017. Time 2: 47.
[5] ‘Vernix d’Ambre venant de Venise’ (Sloane MS 2052 Folio 9v).
[6] ‘Ce Vernix est fort rouge & est celuy des faiseurs de Luths’ (Sloane MS 2052 Folio 150 v).
[7] ‘quella d’ambra si compra, quella di mastice la facio io’ (Merrrifield, M.P, p. 743).
[8] ‘Chés touts les vendeurs de couleurs en Italie on vend une huile espaisse, qu’ils appellent Huile d’Ambre de Venise […] Je croy que c’est ceste huyle dont m’a parlé & se sert Gentileschij ’ (Sloane MS 2052 folio 146v).
[9] ‘Et pour vernir: & pour mesler sur la palette avec les couleurs’ (Sloane MS 2052 folio 151r).
[10] Such a choice of resins for varnishes is also noted by Van Dyck, at the same period, on a folio of a sketchbook: fir balsam, colophony, unspecified ‘vernizia’ and amber varnish (Kirby, J. 1999, p. 13).
BIBLIOGRAPHY:
Arciprete, B. (2004), ‘Il restauro’, La Flagellazione di Caravaggio, il Restauro, Electa Napoli.
Carlyle, L. (2005) ‘Representing authentic surfaces for oil paintings: experiments with 18th and 19th-century varnish recipes’, Art of the Past, Sources and Reconstructions. Proceedings of the first symposium of the Art Technological Source Research study group. Archetype Publications.
CCI (1994) Varnishes: Authenticity and Permanence Workshop, Canadian Conservation Institute, (Reviewed by Neil Cockerline).
Christiansen, K., Mann, J. W. (2001) Orazio and Artemisia Gentileschi – New York Metropolitan Museum of Art, Yale University Press, New Haven.
De Mayerne, T. Turquet, (1620) Pictoria Sculptoria & quae subalternarum artium, British Library, Sloane MS 2052. Trancription in Berger, E. (1901) Quellen für Maltechnik Während der Renaissance und Deren Folgezeit (XVI.-XVIII. Jahrhundert), München.
Demuth, P. (2001) ‘Regeneration of blanched natural resin varnishes with solvent vapour’ Hochschule für Bildende Künste – Dresden/ The ENCoRE Symposium: Recent development in conservation-restoration research 19-21 June 2001.
Eastlake, C. L., (1847) Methods and Materials of Painting, Dover Publications, New York (2001)
Favre-Félix, M. ‘On the recipe for a varnish used by El Greco’, Conservar Património 26 (2017) pp. 37-49 – ARP – Associação Profissional de Conservadores-Restauradores de Portugal http://revista.arp.org.pt/pdf/2016023.pdf
Holmes, M. (1999), ‘Amber Varnish and the Technique of the Gentileschi’, in Artemisia Gentileschi and the Authority of Art: critical reading and catalogue raisonné, R. Ward Bissel, Pennsylvania State University Press, pp. 169-182.
Kirby, J. (1999) ‘The Painter’s Trade in the Seventeenth Century: Theory and Practice’- National Gallery Technical Bulletin, Vol 20.
Leonard M., Khandekar N., Carr D.W. (2001) ‘Amber Varnish and Orazio Gentileschi’s Lot and his Daughters ’, The Burlington Magazine Vol. CXLIII, pp. 4-10
Merrifield, M. P. (1849) Medieval and Renaissance Treatises on the Arts of Painting, Dover Publications, New York (1999).
Pes, J. (2018) ‘The National Gallery’s New Artemisia Gentileschi Should Be a Triumph – But Clouds Are Forming Over Its Ownership During WWII’, December 12, 2018, News-artnet.com.
Pfister, P. (2011) ‘Régénération : l’emploi des vapeurs d’alcool et les dangers des alcools liquides’ / Kunsthaus – Zürich / Nuances 42/43, pp. 24-29.
Ruhemann, H. (1968) The Cleaning of Paintings. Problems & Potentialities. Praeger Publishers.
The Sistine Chapel Restorations, Part III: Cutting Michelangelo Down to Size
“Judging by Past Experience, it is Perilous to Suggest Restoration…”
~ Charles Heath Wilson, 1881, “The Life and Works of Michelangelo Buonarroti”. Publisher: John Murray, London.
“I once barged into a correspondence in The Times when the National Gallery was under fire from the ‘anti-cleaners’. I was ticked off very severely by Lord Crawford, the Chairman of the Trustees. I had, mildly I thought, criticised the authorities for ignoring the sincerely held views of the opposition…I was later restored to favour in high places when I made it clear in an article in The Studio that I was convinced that our National Treasures were in the keeping of qualified responsible people.”
T. J. Honeyman, 1971, “Art and Audacity”. Publisher: Collins, London.
It is not widely appreciated how inherently dangerous art restoration practices remain, or how culturally deranging restoration changes can be. At the bottom end of the trade, restorers often advertise their services on a promise to leave pictures “as good as new – or better”. The restoration of Michelangelo’s Sistine Chapel ceiling was – on the accounts of its own restorers and initiators – the biggest, the best, the most scientifically advanced and “radically transforming” top-end restoration ever undertaken. This “Restoration of the Century” left one of the world’s greatest artistic accomplishments so profoundly unlike its former self that enthusiasts could announce the discovery of a “New Michelangelo” who was “very different from the one art experts thought they knew”. At the same time, the chief restorer thrilled in 1982 that the frescoes looked as good as new: “as though they were executed yesterday”. In the midst of this commonplace restorers’ confusion between “recoveries” and “discoveries” (or sometimes, “revelations”), some surprising expressions of support materialised. In 1987, a top-end art historian writing in the magazine Apollo [Endnote 1] announced the demolition of the “Darkness Fallacy and the Sculptural Fallacy” within Michelangelo scholarship, and predicted that the then concurrent restorations of the Sistine and Brancacci chapels would leave both Michelangelo and Masaccio as “less isolated geniuses” who would be “returned to their respective periods” (i.e. confined within designated art historical boxes). In 1991, a newspaper art critic exulted in the displacement of “doomy outpourings of religious angst” by colours as “bright as Opal Fruits” – which colours reflected the workings of a “much more rational mind” [2]. Unsurprisingly, such professional pleasure-taking in chemical transformations that could cut artistic Titans down to size alarmed those who had been happy with the surviving Michelangelo, and an enormous controversy arose. Unsurprisingly, the criticised characterised the criticisers as instances of “the magnitude of the shock to entrenched opinion” that had been unleashed by a triumphant restoration. (As will be seen, the expression of sincerely held citicisms can be harshly punished when substantial vested conservation interests are challenged.)
Behind this interpretive culture war, the effects of the restoration on Michelangelo’s art were material and aesthetic. Those changes are forever. Although bad scholarship can be remedied by good scholarship, the latter cannot undo damage to unique, historic works. What remains to be done, a third of a century after the restoration’s 1980 launch, is a proper, disinterested aesthetically informed analysis of the restoration-induced changes, item by item, figure by figure, photograph by photograph; and, a frank evaluation and acknowledgement of their cultural and art historical consequences. Had this restoration’s profound transformation been accepted without challenge, we would be in a world today where technicians enjoyed unfettered licence to rewrite (or as they sometimes prefer, “to re-present”) history itself. Even tacit endorsements of injurious restorations can damage scholarship and falsify history.
The restoration of Michelangelo’s Sistine Chapel ceiling was well and publicly defended from 1980 until the mid 1990s. At that period, a seismic shift occurred. What follows is an examination from a British perspective of the restoration’s defences up to 1995 (in which year implicit art historical support for the restoration resulted in a seriously misleading exhibition at the National Gallery); and, a further presentation of visual proofs of the restoration’s injurious consequences. We note here how many supporters have admitted entertaining doubts about the restoration’s probity.
A new cleaning method, and the selling of a “New Michelangelo”
In the 1980s, at the height of an international restoration mania, a supposedly “advanced” “scientific” cleaning material was used on Michelangelo’s Sistine Chapel ceiling. It was ferocious in its effects and mechanistic in its application which was expressly designed to thwart personal and allegedly “subjective” and “unscientific”, aesthetic appraisals. The most sophisticated imagery on an immensely important historic work of art was thus subjected to a “treatment” that derived not from the complexities of picture restoration and its necessary acts of discrimination and constant evaluation but, rather, from architectural stone cleaning techniques. This cleaning method altered the ceiling’s centuries old artistic/historic continuity to such a degree that the restorers and their supporters ventured that history would need to be rewritten. The changes, for sure, were dramatic: depictions of figures that had been archetypally and transcendentally alive were brightened, flattened, rendered more abstract, more “on the picture surface” and left with an altogether more modernist and imaginatively impoverished aspect. Contrary to official claims this (demonstrably) was not a liberation or recovery of the ceiling’s original condition and appearance – see, particularly, Figs. 1 and 60.
When Michelangelo’s ceiling was unveiled in 1512 the world was stunned by the grandeur, pictorial audacity and, above all, by figural inventions that had rendered the divine corporeal and vividly alive within our own space and time. Michelangelo had not so much made depictions-on-surfaces as conjured perceived spaces adjacent to the ceiling’s imperfect forms. His optically “sculpted” spaces – which opened vistas beyond the ceiling’s surfaces while simultaneously projecting figures in front of them – had been realised through powers of draughtsmanship and modelling with utter disregard for the “integrity” of the architectural surfaces. Seemingly palpable space was necessary to situate Michelangelo’s monumental programme of over three hundred figures – figures that ran from depicted carved stone sculptures (his architecture-adorning putti), through living, space-occupying young sculptural Adonis’s (his contorted, anxious ignudi) and, more prosaically, through the historical ancestors of Christ, to the divinely gifted Prophets and Sibyls, and finally to God Himself and his celestial supporters. This was immediately acclaimed as a dazzling artistic and illusionistic advance. Its eventual influence was to carry mural painting into the Baroque and beyond. Although artistic fashions and modes of description change constantly, for nearly five centuries this “stupendous” work’s vital relationships endured, as the many copies made throughout its existence testify (see Fig. 1b).
How Doubts became Denials
With the restoration of Michelangelo’s Sistine Chapel ceiling, while some art world players were galvanized into opposition, many others were excited and swept along by the presumptuous magnitude of the transformation. As mentioned, many of the supporters of the restoration have disclosed moments of doubt. We cited in our post of March 4th that the co-director and chief restorer of the ceiling, Gianluigi Colalucci, had said in 1990: “I must confess I harbour a lingering almost subconscious fear that someday someone will come, unexpectedly, with a really intelligent observation that will show all of us to have been blind.” The following year the Sunday Times art critic, Waldemar Januszczak, produced a celebratory book (“Sayonara Michelangelo”) in which he asked in the face of the transition:
“Who among us looking up for the first time at this new, bright, clear Sistine ceiling, perfectly rational, a light-filled work, was not tempted by the doubt: it can’t be so.”
This temptation was throttled by the sheer spectacle of the restoration as an art-changing performance:
“The thin and neat scaffolding bridge moved elegantly along the ceiling like a very slow windscreen wiper. In front of it lay the old Michelangelo, the great tragedian, all basso profundo and crescendo. Behind it the colourful new one, a lighter touch, a more inventive mind, a higher pitch, alto and diminuendo. It was being able to see both of them at once – Beethoven turning into Mozart before your eyes – that made this restoration such a memorable piece of theatre.”
Even the National Gallery’s thoughtful and scholarly (then) curator of Renaissance painting, Nicholas Penny, who recognised (“White Coats v. Bow Ties”, London Review of Books, 11 February 1993) that “The most terrifying thing about the restoration of old paintings and sculpture, as distinct from the editing of texts, is that something might be lost altogether”, swallowed his own moment of anxiety:
“But perhaps one should admit that something is lost however much is gained by any intervention – some possibility of interpretation if not some actual pigment or glaze or polish.” [Emphasis added.] With a seeming acceptance of such material and interpretive losses, the greater gains in the Sistine Chapel were said by Penny to have emerged as follows:
“Study of the ceiling now that it has been cleaned tends to distance Michelangelo from the art of recent centuries – and from the work of artists who were inspired by the ceiling – and reveals a far closer connection with the dazzling colours favoured by artists in his immediate following and also evident in some of the better-preserved 15-century Florentine panel paintings.”
Note the cultural role being served by “restoration” changes: even when their legitimacy is vehemently challenged, restorations facilitate through “study”, new interpretations and a certain re-shuffling of scholarly furniture. Scholars and restorers invariably say that they have duly considered and rejected the criticisms as ill-informed, but the fact remains that eventually all restorations themselves come to be rejected and undone by later restorers. Indeed the alleged need to undo previous restorations is one of the commonest justifications for a restoration. The net consequence of repeated restorations is not a return to an original condition each time, but a daisy chain of altered alterations, with each successive restoration leaving the given work looking unlike its previously “restored” state. With accumulating alterations, works get thinner and thinner. Insofar as such abraded appearances are acknowledged, they are attributed to previous “rubbing”, or other euphemisms. Losses of original material during restorations (as Penny conceded) are to some degree inevitable. This is because while painters work from supporting canvases or panels upwards, restorers work downwards with their solvents and abrasives towards or beyond pictures’ finished surfaces. Collisions are inevitable.
The “New Michelangelo”
The art historical revisionism that advanced with this restoration might have been plausible had changes of colouring been the only changes, and had any of Michelangelo’s contemporaries noted dazzling colours. By any properly visually alert appraisal, however, the changes were less ones of enhanced chromatic power than of debilitating losses to the ceiling’s initially celebrated dramatic modelling and lighting (see Fig. 60). Although Nicholas Penny acknowledged such objections to the received critical consensus, he nonetheless caricatured them:
“Polemics against the restoration appeal repeatedly to the ideas of chiaroscuro and harmony as artistic absolutes.” The implication that critics were in the grip of a fetishized false artistic consciousness was underscored: “It is painful but important to acknowledge that the inspiration one artist draws from another, earlier one is often inseparable from misunderstanding.” It is a common defence against critics to allege some “misunderstanding” of the “facts” because of ingrained or entrenched prejudices but with this restoration the objections stemmed not from misapprehensions or misplaced adherence to ahistorical idée fixes, but from the fact of the concrete, demonstrable and historically verifiable injuries to the painting.
Further Material Evidence of Injury
Having shown many directly comparative pairs of “before” and “after” restoration photographs as proofs of injury – we further present seven single photographs (Figs. 1 to 6 and 48b), each of which alone testifies to the destruction of the final stages of Michelangelo’s painting. To pinpoint the unsoundness of the restoration’s theoretical underpinning, we also show two other works, one drawn (Fig. 41), one painted (Fig. 47) that seem emblematic of serious critical neglect. It will be argued that insufficient respect for the artistic and documentary records (particularly in the form of graphic copies and related paintings) facilitated an initial misdiagnosis of Michelangelo’s painting methods. In addition, we examine the “macro” consequences in terms of changes to the previous relationships between the broad and differentiated zones of the Sistine Chapel’s consecutively decorated surfaces.
Selling the Restoration and Blocking the Critics
In December 1987 two articles that acknowledged the intensity of the controversy were published in Britain. One was a work of journalism by a leading cultural writer with strong interests in science, Brian Appleyard. The other was a full-blown and frankly declared Public Relations Apologia by Kathleen Weil-Garris Brandt, a professor of art history at New York University, a consultant member of the Vatican’s Scientific Advisory Committee on the restoration, and the Vatican’s spokesman on “scholarly and general information” for the public relations firm Arts and Communications Counsellors, which had been retained to handle the crisis.
To take the former first: on 20 December 1987 the Sunday Times magazine carried an article on the restoration – “Lost or Found?”. Its author, Brian Appleyard, acknowledged that he had been “carefully and elaborately briefed” by the co-directors of the restoration, Fabrizio Mancinelli, the curator of the Vatican Museums’ modern paintings, and Gianluigi Colalucci, the head restorer, and by Professor Carlo Pietrangeli, the director of the Vatican Museums, and that the next day he had been “scientifically persuaded” by the Vatican’s chemist, Nazzareno Gabrielli. Nonetheless, Appleyard gave a fair and balanced account, citing the arguments of James Beck, a professor of art history at Columbia University, New York. Even while recognising that “the vast majority of art historians are on the side of the Vatican”, Appleyard concluded “So far the Vatican have been troubled by Beck but have been secure behind the battery of art historians prepared to stand up and oppose him. But his fury and energy are beginning to pay off. More and more awkward questions are beginning to be asked and he warns of more home-grown opposition in Italy.”
An Artist Thwarted
The article itself prompted controversy in Britain by including directly comparative before and after restoration photographs of sections of the frescoes. To this artist’s eyes, those photo-comparisons showed instantly that the “cleaning” was damaging and that the protests were well founded (see Figs. 9 to 11b). Working then as the principal illustrator of the Independent, a new and fashionable newspaper with excellent arts coverage, I asked the arts editor if I might write a short article demonstrating the ways in which the ceiling was being damaged. He declined on grounds that the newspaper’s art critic, Andrew Graham Dixon, had (like Beck) visited the scaffolding, and had been persuaded (like many art historians and critics) that all was fine.
Thus, the first lesson in this controversy was that an artist who had trained for four years in a junior art school, for five years in a fine art college and for three post-graduate years at the Royal Academy Schools – and who afterwards had taught and practised drawing and sculpture for fifteen years – could be unvoiced in a debate about the treatment of a work of art in deference to the views of someone sixteen years younger who had read English at university and art history at the Courtauld Institute (- on which institution’s restorations see “Taking Renoir, Sterling and Francine Clark to the Cleaners”).
An Artist Heeded
When the Independent launched a Sunday edition in 1990, its arts editor invited an article on the Sistine Chapel restoration. In preparation, I contacted James Beck who put me in touch with many key critics. These included, in Italy, Professor Alessandro Conti, Venanzo Crocetti, the sculptor who had worked on the previous restoration of the Sistine ceiling in the 1930s, the restorer Mirella Simonetti; and, in the US, the critic and writer Alexander Eliot and the painter Frank Mason. From the Independent on Sunday I spoke directly to Professor Brandt, Dr Fabrizio Mancinelli, Professor John Shearman, (an advisor to the restoration who viciously attacked Beck on the record and then threatened to sue if I published his grossly defamatory comments), and wrote to Gianluigi Colalucci. The second lesson had thus been that critics of restorations, however prestigious, could find themselves victims of scurrilous attacks from professional peers.
Shooting the Messengers
When surveying the restoration’s then decade long literature, Brandt’s 1987 Apollo article emerged as a seminal document. Its declared purpose had precisely been to defend the “transformation of Michelangelo’s mysterious dark frescoes…into [the] blazing colouristic pyrotechnics that is attracting the most public attention and controversy” (this was despite the fact that Michelangelo had been praised at his own funeral for “the fleeting and sombre colours with which he had formed such rare and lofty shapes”). Most striking of all was Brandt’s assaults on the restoration’s critics, whether they were scholars, restorers, traditionalist artists or fashionably modish artists:
“But, a tiny, heterogeneous and vociferous cadre emerged with the dramatic charge that Vatican conservators are ruining one of the great icons of western civilisation. “Convinced of the urgency of their mission, the critics conducted their campaign in the international press and television and achieved a remarkable degree of public visibility. A letter by a well-meaning group of American master painters of the Pop generation, calling for a halt to the cleaning of the Sistina (as well as the Last Supper) was one index of their success. An interview with one of the American Sistina critics in People Magazine was, however, another… “To the ears of most art historians and conservation experts, however, the critics claims sounded more and more like the wild cries of some ferocious mutant of Chicken Little. Many believe that the critics, like that benighted bird, were misunderstanding insufficient evidence to draw mistaken conclusions to the alarm of the neighbours. Still the issue is a serious one. Are the critics merely opportunists, body-surfing on a wave of publicity they would never otherwise have enjoyed? Or should we be hearing in their polemics a warning that the cleaning of major works of art is another of those matters too important to be left to the experts?” “If the critics’ questions have such detailed answers, what is the continuing public fuss about? Why has the criticism been so remarkably vague, shifting and misinformed? Why have the critics been so reluctant to make the frequent visits to the Sistine Chapel scaffolding…Why does criticism remain invulnerable to the abundant available information. How could such a small group of people, none of whom is – in a professional sense – an expert on Michelangelo and conservation, attract so much publicity and even some well-intentioned adherents? (The original nucleus of nay-sayers consists of only five persons: two painters, one former art critic and two art historians, distributed in Italy and the USA; connexions between them exist but are hard to define.)”
In addition to an insinuation of some underlying conspiracy, Brandt appended an imputation of political motivations that served as platforms for personal opportunism:
“It is easy to see how any hint that the Vatican might be hurting Michelangelo could fuel political fires while providing a chance for professional power play among factions of the intellectual establishment.”
If political motivations combined with personal power play might exist among critics in Italy, Brandt maintained, the situation was different in the United States where:
“The continuing publicity has, of course, also become a phenomenon in itself with a life and fascination of its own. All the more significant that only one American scholar has been tempted to join the public furore. “None of this grandstanding matters much – although one doesn’t like to see an important issue distorted and people misled. I do not believe that a tenacious campaign of ill-informed criticism and personal attacks on the conservators will stop the careful cleaning of the Ceiling.”
Traditional Slurs
At this historical point Brandt’s past abuse of the critics might best be taken to have been self-answering. Her assurance that “the cleaning chemicals do not actually come into contact with the fresco surface” has not worn well and, besides, was at odds with the chief restorer’s earlier admission that if left on a minute too long the chemicals began devouring the fresco surface and Michelangelo’s shading with it. Similarly, her claim that the restoration had been “spurred by the alarming discovery that the glue layers were contracting as they aged , and were pulling flakes of plaster and pigment away from the surface of Michelangelo’s frescoes” proved an impermanent position. As was later reported in “Art Restoration, The Culture, the Business and the Scandal” (James Beck and Michael Daley, 1993), it had been claimed in 1986 (six years into the restoration) that “various checks [had] ascertained that in several places minute flecks of colour were lifting” and that this had “necessitated an immediate restoration.” In 1987 it was said that extensive areas of flaking were progressively worsening and threatening an imminently “uncontrollable situation”. By 1988 Vatican spokesmen were claiming that the weight of encrustations upon the paint surface was causing it to break away from its ground. By 1989 it was said that the glues had “shrunk and puckered” causing “scabs” to fall away “pulling pigment with them”. It was said that this “slow destruction by glue-pox” was “the Vatican’s principle motivation for cleaning the ceiling”. When we asked Brandt in 1990 how big the puckerings were, she replied “Oh! Some are as big as your hand.” Soon after, in 1991, the problem de-escalated: initial investigations were acknowledged, once more, to have encountered “minute desquamations and loss of pigment.”
Brandt’s patronising claim that “the so-called ‘controversy’ is not actually about facts and issues but is a reflection of culture shock” lamely echoed charges made in earlier restoration controversies. During the National Gallery cleaning controversy in London in the late 1940s the critics were said by the art critic, Eric Newton of the Daily Telegraph, to be suffering from the “shocked eye”, a condition which afflicted “the connoisseur and the artist – the visually sensitive man with a quick eye and profound reverence for what he had seen”. Just as at the Sistine Chapel, Newton’s dismissal of the expertise of creative players was made on the claimed authority of restoration “science”. Such generalised appeals to the authority of science often prove to be empty incantation and Newton volunteered no more than “The purely scientific and technical aspects of the process, however are too complex to describe here.”
In 1857 picture cleanings at the Louvre were defended on the grounds that “It is understandable that the romantic amateur loves the rust and the haze of the varnish, for it has become a veil behind which he can see whatever he desires” (Horsin Déon). One critic of the Louvre’s restorations, Edgar Degas, threatened to produce a pamphlet that would be “a bomb”. When Brandt dismissed the Sistine Chapel critics on the grounds that the controversy was “rather unreal since the arguments against cleaning are mainly nostalgically emotional [while] those on the other side are chemical and scientific” she presented her role as being to “dissolve some of the murky argument and preserve a few facts”. As will be seen, artists and art historians can have distinctly differing views as to what constitutes a “fact” and what a blind prejudice.
The Evidence of Restoration Injuries – and the Surprising Reactions To It
When the Independent on Sunday’s picture desk obtained high-quality colour transparencies from the Vatican in 1990 we examined the image of the Erythraean Sybil, part of which had been shown in Appleyard’s Sunday Times article, and encountered among many losses the restoration-mangled foot seen at Figs. 2 and 3. Those losses and losses to a figure on one of the lunettes were first published in the Independent on Sunday of 25 March 1990 (see Figs. 12, 13 and 14) and then later in the Independent of 20 March 1991, where the arguments against the restoration were put by Daley, Beck, Conti, Eliot and the art historian Bruce Boucher, and balanced by three counter arguments.
Of the latter, Ernst Gombrich was harshest on the critics: “No one is infallible, but I have not the slightest doubt that the overall impression and operation is right, and the critics talk absolute nonsense.” The Courtauld Institute-trained editor of The Art Newspaper, Anna Somers Cocks, condescended that some people liked things to look “romantic and old, and can’t cope with the clarity and brilliance of what the Sistine Chapel looks like now it has been cleaned”. The Courtauld Institute-trained Nicholas Penny said “It’s one of the great revelations of our time but the transformation is so absolutely amazing that it is bound to give some people a shock and I am sympathetic to them being shocked”.
Brandt’s 1987 Apollo account had fallen on well-worked ground in Britain where even art world players with strong track records of being critical of restorations had become supportive of this restoration. The Courtauld Institute-trained restorer Sarah Walden, who had implicitly criticised many of her peers and predecessors in her 1985 book “The Ravished Image ~ Or How to Ruin Masterpieces by Restoration”, was one such and she offered this (simplistic) technical distinction in defence of the restoration’s results:
“Unlike easel paintings, frescos are not a film of paint on a surface but impregnate their own support and need no varnish. Given an intact, dry wall, they are spared many of the rigours of restoration, except for the removal of dust and dirt. As the recent cleaning of Raphael’s Galatea in the Farnesina in Rome has shown, and as the present work on Michelangelo’s Sistine Chapel seems to confirm, this is one area where impressive results can be had with far less risk.”
As shown on 28 April 2012, the restorer Leonetto Tintori had discovered on examining the ceiling that it had been covered by what he termed “Michelangelo’s auxilliary techniques” which included not just glue or size painting but also oils. Walden, whose principle critical complaints had been against the “Anglo-Saxon” schools of restoration in Germany, Britain and the US, as opposed to the “Latin” restorations of France and Italy [3], had evidently accepted the restorers’ claims that Michelangelo had simply coloured successive patches of wet and drying plaster at great speed and thereafter accepted whatever disparities and inequalities of value emerged on drying without making any unifying or enriching interventions with glue-based painting a secco on his fresco surfaces when dry, as was customary and as had been noted by his contemporaries. She had further accepted the restorers’ (revisionist and unsupported) claims that the large amounts of glue-based material on Michelangelo’s frescoes had been applied by restorers as a “varnish” to a work which, on her own account, would have required no varnish, and despite the fact that previous Vatican restorers had attributed that very material to Michelangelo. Gombrich, who had played a prominent role in the post-war cleaning controversies at the National Gallery in London – and who had written the Foreword to Walden’s book – was similarly persuaded by the present Vatican restorers’ well disseminated technical account.
Gombrich’s Startling Lapse of Scholarship and Visual Acuity
In 1995 Gombrich presented an exhibition, “Shadows: The Depiction of Cast Shadows in Western Art”, at the National Gallery (London) on the thesis that an avoidance of cast shadows had been “widespread among painters of the High Renaissance”. He did so without reference to the paintings of Michelangelo or Raphael. (When pressed on these omissions he replied “I never meant [the catalogue] to be an encyclopaedia of all cast shadows, though some of my readers seem to assume so.” – Letter to Michael Daley, 10 June 1995.) As will be shown, in a curious fashion, Gombrich’s pictorial amnesia constituted the logical terminus of a more general denial by art historians of the distinctive artistic relationships that had survived on the pre-restoration ceiling, and of the connections between those relationships and the art forms of the period and immediately afterwards. Defending this restoration became an exercise in not-seeing what was and what had been. Gombrich’s position on this restoration was a great disappointment to us given his outstanding earlier contributions.
Gombrich on the Sanctity of Scholarship
In 1978 as the Vatican Museums’ curators, restorers and scientists were moving towards restoring the Sistine Chapel ceiling, Gombrich had discussed one of Michelangelo’s prophets – his Ezekiel – in the context of problems of art connoisseurship and medical practices (and with no reference to colour) [4]. He pointed out that just as with placebos “suggestibility plays a part in our response to works of art”. Demonstrating by a comparison between Jeremiah and Ezekiel that the latter was uncharacteristic of Michelangelo but characteristic of Raphael, he firmly attributed its execution to Raphael (see Fig. 25). Of all the prophets on the ceiling, he contended, this one alone lacked Michelangelo’s profound stylistic traits: “he always negates the picture plane. Jonah being the most famous example of this space-creating and surface-denying imagination, which so aroused the admiration of Renaissance writers.” How could it have been overlooked, Gombrich continued, that the Ezekiel, far from denying the picture plane, asserted it: “Instead of being self-enclosed it impetuously moves to the right, addressing an unseen partner in what looks like a violent argument. It is this implied movement which tears the cohesion to pieces and introduces a shrill note of drama entirely absent from the other creations. The composition is only superficially Michelangelesque…” Further, what the Ezekiel betrayed in its agitated gestures was Raphael’s own great indebtedness to Leonardo: “Indeed it is hardly too much to say that Ezekiel would fit comfortably into the groups of the apostles in the Last Supper of S. Maria delle Grazie.”
This was vintage Gombrich, learned, conceptually adroit, visually acute and boldly re-attributing a Michelangleo to Raphael through Leonardo. Except that here his elegant arguments and persuasive stylistic “evidence” amounted to no more than a plausible contrivance – a conceit that was, he confessed, an art connoisseur’s equivalent of the medical practitioner’s placebo. He hoped that connoisseurs “will not take offence and that the spirits of Michelangelo and Raphael will forgive me this harmless fabrication.” (Was that jest to become a maquette for a far greater and undisclosed prank on those two great artists seventeen years later?)
Gombrich and the Guardians of Memory
Two decades earlier, in a moving 1957 essay “Art and Scholarship”, Gombrich had championed the scholar as “the guardian of memories”. It seemed that he had been stung to do so by the painter Wyndham Lewis who had recently written:
“When I see a writer, a word man, among a number of painters, I shake my head. For I know he would not be there unless he was up to something. And I know that he will do them no good…”
Gombrich’s retort was: “Why should the artist bother about that spoilsport the scholar and his past? The brief answer to this question, I fear, may sound moralistic. Because truth is better than lies.”
Indeed it is – but this leaves his own later omissions in the National Gallery exhibition the more perplexing: How could so great a scholar make so seriously misleading and unfounded a claim in (seeming) defence of such an unsupportable restoration? Spicing this mystery is the fact, as shown below, that Gombrich’s faith in the Sistine ceiling restoration was not absolute and that he, too, like Colalucci, Januszczak and Penny, had once acknowledged a moment of doubt.
Gombrich’s Moment of Doubt
As mentioned, Gombrich was as one with the views of the restorer Sarah Walden on this restoration. Walden was to persist with her endorsement of the restoration until at least 2004 when, in a revised edition of her book (now titled “The Ravished Image ~ An Introduction to the Art of Picture Restoration & Its Risks”), she pressed Gombrich into a swipe at critics of the Sistine ceiling restoration:
“The subject of restoration tends to attract cranks and fanatics, but to suggest that the world’s foremost art historian was one of those would be absurd. He approved for example of the cleaning of the Sistine Chapel, and wrote to me about an Italian who opposed it and was seeking his support: ‘Of course he wants to use [my writings] as ammunition against the cleaning of the Sistine Chapel, but I do think the problems of cleaning are different…I have been up the scaffold…I have no doubt that the team are aware of the many problems…I am even fairly happy about the work on the Sistine ceiling.’” [Walden’s ellipses.]
While Walden tactfully refrained from identifying the Italian critic, by publishing a letter she received from Gombrich in 1987 in the revised book, she revealed an intriguingly confessional remark:
“Last week I was sent a book from Italy violently attacking the ‘cleaning’ of the Sistine ceiling. It may contain some exaggerations but it is still disquieting. Michelangelo e la Pittoria a Fresco, by Alessandro Conti (La Casa Usher, Florence 1986). If you read Italian and have a little time during the next few weeks I’ll gladly lend it to you to look at.”
That unsettling book was later described by Penny in the LRB as “the most sustained polemic against the restoration”. Charles Hope, an authority on Titian and then the Senior Lecturer in Renaissance Studies at the Warburg Institute, London, wrote (in a letter of 1994 to the restorer Helen Glanville – see below) that “The scholar who has done most to draw attention to the relevant texts is of course Conti; and whatever you think of his book (he is not a restorer, by the way), I am sure we can agree that it is obligatory reading for anyone interested in the controversy surrounding the ceiling. Yet […] and so on not only pass over his arguments in silence instead of addressing them, they seem never to cite his book at all…” Gombrich, too, would seem to have suppressed his own disquiet and passed over Conti’s arguments even though he must have appreciated that Conti was a very considerable authority on restoration having taught the History and Techniques of Restoration at the University of Bologna; the History of Modern Art at the state university in Milan; and, the History of Art Criticism at the University of Siena. In his 1988 “History of the Restoration and Conservation of Works of Art” (republished by Butterworth in a 2007 English translation by Helen Glanville) Conti spoke of the alien “material and chromatic robe” with which the Sistine ceiling paintings had been invested “during the present restoration” and identified “the various media” Michelangelo had used on the ceiling as “fresco, lime and secco”. (For Conti’s further comments in that book on Domenico Carnevale’s repairs to Michelangelo’s ceiling, see the caption at Figs. 48a and 48b. That his now very scarce Michelangelo e la Pittoria a Fresco has yet to be published in English might itself be thought something of a scandal.)
The Context of Gombrich’s National Gallery Exhibition
Gombrich’s 1995 exhibition came not just towards the end of his long and distinguished career but at the end of a brief period of intense discussions in Britain on the restorations at the Sistine Chapel and the National Gallery. We had been at pains to show that extreme as the Sistine Chapel restoration was, it was part of a wider radically transforming international assault by restorers acting on historic works of art in the name of their “conservation”. (Between 1990 and 1995, this author alone had published twenty-three times on those subjects – see Fig. 12.) Such discussions greatly accelerated with the publication of the 1993 Beck/Daley book “Art Restoration ~ The Culture, the Business and the Scandal” which, in addition to two chapters on the Sistine Chapel carried a chapter on the National Gallery’s restorations. Responses to the book were various and sometimes startling. They prompted an additional chapter, “The Establishment Counterattacks”, in the revised 1996 American paperback edition. We should acknowledge here that the National Gallery, under its present director, Nicholas Penny, as initially under its previous director, Charles Saumarez Smith, has given ArtWatch UK full and most generously helpful access to all conservation and archival records, and that we have drawn heavily on the compendious material on the Gallery’s conservation practices that is provided in the annual Technical Bulletins. Moreover, since 2012 the Gallery has placed much archival material online.
Responses to “Art Restoration, the Culture, the Business and the Scandal”
After his initially even-handed coverage, Brian Appleyard now characterised Beck in the Independent as being “litigious” – even though he had brought no legal actions but had been sued (unsuccessfully) for criminal slander by an Italian sculpture restorer and had faced a possible prison sentence of three years. Appleyard compared the Beck/Daley book unfavourably before its publication – and before he had read it – with Walden’s book of 1985, specifically dismissing its unseen chapters on the Sistine ceiling on a Waldenesque insistence that “The fact that it was largely pure fresco made the cleaning process straightforward.”
On 18 November 1993 the New York Review of Books carried an essay by Charles Hope, on “Art Restoration ~ The Culture, the Business and the Scandal”. Hope (who was later to become, as Gombrich had been, the director of the Warburg Institute), recalled that “like many other art historians” his initial response to the cleaning had been “entirely favourable”, but which confidence, he now confessed, had been “entirely misplaced”. Viewed in their entirety, the cleaned frescoes create “a decidedly disagreeable impression: the colours are gaudy…the figures look crude and often flat and the architecture seems insubstantial and pedantic.” In short, “Restrained grandeur has been replaced by garish confusion” and it was “difficult to believe that the right procedure was adopted.” Worse followed for the restoration establishment. “Restorers are not always particularly well-informed about the history of art nor especially interested in it”, while, for their part, art historians “seldom have the scientific training to judge the full implication of the courses of action proposed to them.”
Perhaps most disturbing to the Sistine Chapel restoration supporters was Hope’s acknowledgement that when “Talking to friends I find that my unease is widely shared; and it is certainly noticeable that the completion of the restoration has not attracted the kind of acclaim that greeted the unveiling of the lunettes.” After the publication of his review, Hope told Beck in a letter (20 November 1993) “You’ll be cheered to know that several art historians have told me, by letter or in person, how glad they were that I had said what I did.” This greatly amplified a note of caution that had already been present in Nicholas Penny’s observations in the LRB nine months earlier:
“I have met few art historians, even among those who are nervous about the cleaning of paintings, who believe that a mistake was made in cleaning the ceiling. Nevertheless, many art lovers were shaken by what has been published on the subject and some have been no less alarmed by what they have seen in the chapel itself.”
A Restorer’s Response
Temperatures rose after Hope’s review. The Art Newspaper allotted four pages in its May 1994 issue for the counter arguments of Helen Glanville, a Courtauld Institute-trained picture restorer who had read Modern Languages at Oxford. Like Brandt seven years earlier in Apollo, Glanville struck a combative tone and a tendentious note by producing accounts of our “Accusations” against which she provided lawyerish “Defences” written in consultation with the authorities. In 1963 Gombrich had complained “Nobody who criticizes the policy of a great institution expects such criticism to be accepted without further argument. What one has the right to expect, however, is that the answer should concern itself with the substance of the criticism.” In language eerily reminiscent of that used against Beck by Shearman, Glanville challenged not only our character but the judgement of those who had supported us: “The most disturbing aspect is that reviews of the book (including that by Charles Hope in the New York Review of Books of 18 November 1993) appear to indicate that even respected members of the art world accept Daley’s presentation of ‘facts’ at face value”.
Hope’s Riposte
Hope sent a letter to Glanville explaining that he had been “particularly careful not to take Daley at his word”, that he had checked what I had written on Sebastiano was in accordance with the monograph on the artist by Professor Michael Hirst (of the Courtauld Institute, and a member of the Vatican’s Pontifical Commission for the Restoration of the Sistine Chapel ceiling), and also with “the account of the [Sebastiano] restoration in the National Gallery’s Annual Report”. In further reproach, he added “I would have thought it was fairly obvious to anyone familiar with the recent literature that I had done my homework, not least because there are various arguments and texts used in the review which do not figure in the Beck-Daley book at all. [5] In my review I have tried very hard to be fair to both sides…Having read your article I see nothing that ought to be changed; indeed it would be difficult to see what you actually found objectionable in it…Before I began working on the review my scholarly sympathies were entirely on side of the defenders of the recent restoration, and I was hoping indeed expecting, to be persuaded that my unease at the present appearance of the ceiling was unjustified. But the reverse has happened, and not just because Beck and Daley produced such compelling arguments…” Hope then set out with great clarity the scholarly import of the material evidence we had supplied and which he had found persuasive:
“I was disappointed that you did not discuss directly what seemed to me the most important single type of evidence in the whole controversy, the drawing by Clovio of Jonah [see Fig. 1] and the one at Windsor showing the whole ceiling. Both of these, as you will remember, can be securely dated to no later than 1534, and they both show very specific, well-defined areas of shadow also recorded in the engravings of the sixteenth century and later, which have now disappeared. The important thing is that the drawings predate the engravings, that they were manifestly produced independently of one another, yet they are consistent. If they are misleading in the same way, we need to have some explanation of why this is so, because if Michelangelo did paint shadows of the kind they show, and in the places they show, then Beck and Daley would seem to be vindicated.”
Gombrich’s Denial of Historical Realities
Coming so soon after Hope’s generous and substantial support, Gombrich’s claim, as a scholar with an impeccable record as a critic of restorations, that cast shadows had popped out of existence for the duration of the High Renaissance might have seemed like manna to the National Gallery and the Vatican. Did his historical account not implicitly constitute a most authoritative rebuttal of the Beck-Daley, Hope-supported, central claim that the destruction of Michelangelo’s cast shadows had given historically corroborated proof of injury to the Sistine Chapel ceiling? In so doing, did he not also provide express relief to the restorers themselves? If the shadows had never existed during the High Renaissance, as he was claiming, how could they possibly have been harmed in restoration?
In May 1994 The Art Newspaper published my letter of reply to Glanville’s article. It concluded: “this concern [over restorations] is shared by others. The current director of the Prado, Calvo Serrraller, has condemned the Sistine Chapel restoration as a misguided ‘face-lift’. A restorer in St Petersburg complains of the ‘perniciousness of radical British restoration techniques’. A curator of New York’s Metropolitan Museum condemns the ‘strident tones’ produced by ‘the exuberant cleaning of paint surfaces, for which the National Gallery has unfortunately become famous’. It is a pity that the National Gallery staff are not prepared to debate these matters directly. It is a pity that discussion should be necessary at all when, to educated eyes, the evidence of injury contained in before and after cleaning photographs is so unmissable.” It would seem, (on Gombrich’s recollection – “In the shadow of the masters”, interview, The Art Newspaper, May 1995) that that very month, the National Gallery’s director, Neil MacGregor, approached Gombrich to ask whether he would do an exhibition in the “The Artist’s Eye” series (in which artists assembled and discussed selections of paintings made from within the Gallery’s collection).
Mr MacGregor’s Choice
Gombrich submitted five or six proposals from which, he said, MacGregor “selected shadows”. Thus the National Gallery had obtained an exhibition that purported to explain why the masters of the High Renaissance had opted to “show us a shadowless world”. If the content was helpful to the Gallery, the fact of Gombrich’s participation might have been a greater boon still. As a critic of the Gallery’s restorations during the 1950s and 1960s he had been a dangerous foe. Before becoming the National Gallery’s director, MacGregor, as editor of the Burlington Magazine, had himself been a partisan of restorations and was well aware of Gombrich’s standing in these disputes. In a Burlington editorial in January 1985, MacGregor had written:
“Cleaning controversies are probably the liveliest, and they are certainly the hardiest, of the art world’s perennial topics of discussion. Of course, thefts and exports make bigger headlines, but they lack conversational staying power, just as new record prices slip faster and faster from the memory. But debates on cleaning run and run, this Magazine having been the forum for one of the most celebrated jousts in the early 1960s.”
MacGregor then drew a distinction that marked a crucial advance that picture restorers had made by the 1980s: “Then the key question was how, or even whether, to clean. Now it is more likely to focus on what can be learnt through cleaning about the picture itself.” This rebranding of art restoration, despite all of its inherent risks, as an aid to scholarship had seemed a spectacular professional coup. By the late 1980s museum restorers had forged a common professional alliance with curators in which “discoveries” made in the course of a restoration could be presented to the world through professional journals, museum press releases, and newspaper/television interviews. The National Gallery laid claim for having pioneered the new hybrid discipline known as Technical Art History, in which curators, restorers and scientists pool efforts so as to fly in tight professional formations. In reality, museums and galleries had set themselves a trap – and Gombrich had chosen the worst possible moment to flip sides in the Great Restoration Battles: to talk about what has been learned/discovered requires the production of material, visual evidence and such evidence becomes fair game for examination.
Gombrich’s Case Against the National Gallery’s Restoration Methods
In 1950 Gombrich had drawn attention in a letter to the Burlington Magazine, to a passage in Pliny which described wondrous effects achieved by the legendary painter Apelles when he finished off his pictures with a thinly spread dark coating or “varnish”. How could we be sure, Gombrich asked, that no Renaissance masters had ever emulated the great painter of antiquity by applying similarly toned varnishes to their own works? He received no reply from the National Gallery. Ten years later, he put the question again in his book “Art and Illusion”, this time provoking Helmut Ruhemann, the Gallery’s pioneering exponent of “Total Cleaning”, into a categorical insistence that “there is no evidence for anything so inherently improbable as that a great old master should cover his whole picture with a ‘toning down layer.'”
Gombrich returned to the fray in 1962 in a Burlington Magazine article (“Dark varnishes – Variations on a Theme from Pliny”) contending that even a single instance of tinted overall varnish would undermine the philosophy of the Gallery’s intrusive restorers who presumed to discern and recover originally “intended” effects among the complex, variously degraded, many times altered material layers of old paintings. Gombrich had cited Pliny’s remarkable technically eloquent account of Apelles’ method: “He used to give his pictures when finished a dark coating so thinly spread that, by reflecting, it enhanced the brilliance of the colour while, at the same time, it afforded protection from dust and dirt and was not itself visible except at close quarters. One main purpose was to prevent the brilliance of the colours from offending the eye, since it gave the impression as if the beholder were seeing them through a window of talc, so that he gave from a distance an imperceptible touch of severity to excessively rich colours.” To the National Gallery the suggestion that colour might be suppressed in any degree by an artist was an affronting heresy, and the idea that a dark toning layer might simultaneously render colours individually more brilliant while collectively more unified was an oxymoron.
The Gallery’s then head of conservation science, Joyce Plesters, responded with a long, witheringly dismissive rebuttal in the Burlington (“Dark Varnishes – Some Further Comments”). Professor Gombrich, she insisted, lacked “technical knowledge” and his scholarship was incomplete and misinterpreted. The entire documented history technical history of art – much of which she appeared to quote – showed that “no convincing case” could be made for a single artist ever having emulated Apelles’ tinted varnish. The passage from Pliny, she sniffed, was but a matter of “academic rather than practical importance” – a charge that was echoed by the director, Philip Hendy, in the Gallery’s Annual Report where he disparaged technically ignorant “university art historians”. Plesters grandly offered to “sift” and “throw light” upon any further historical material that Gombrich or others might care to present in future directly to the National Gallery. Once again, a moment of high political danger for the Gallery’s restorers and curators passed: if no evidence existed of artists having used glazes and varnishes in the manner alleged by critics, how could restorers possibly be damaging them?
The controversy slowly subsided into isolated protests such as that of the painter Pietro Annigoni who painted “MURDERERS” onto the doors of the National Gallery, one night in 1970, in protest against what he had described in a 1956 letter to the Times as “atrocious results [that] reveal an incredible absence of sensibility”. But by 1977 it was “game-over”, so to speak. That year the National Gallery felt confident enough to launch its Technical Bulletin in which restoration methods would be described and illustrated. In it, Plesters mused complacently that “one or two readers may recall the furore when the cleaning of discoloured varnishes from paintings…began to find critics”. (On Plesters’ own technical incompetence, see our post of 27 January 2011.) In the same year a former director of the Gallery, Kenneth Clark, pronounced picture cleaning “a battle won” and claimed responsibility for the victory by having installed a “scientific department with all the latest apparatus” at the National Gallery. He had done so, he said, not because he believed in the “application of science to picture cleaning”, but rather because “until quite recently the cleaning of pictures used to arouse extraordinary public indignation, and it was therefore advisable to have in the background what purported to be scientific evidence to ‘prove’ that every precaution had been taken.”
Gombrich’s Vindication
Joyce Plesters died in October 1996. Earlier that year the National Gallery’s Technical Bulletin carried reports of the cleaning of two paintings by Leonardo’s follower Giampietrino. One, his Salome, had suffered the usual weakening of modelling and shading. The other, his Christ carrying his Cross (Fig. 45) had not. Intriguingly, the latter was said to enjoy both “intensity of colour” and a “restrained overall effect” – the very paradoxical effect the Gallery had dismissed as inherently improbable. Even more remarkably, Giampietrino had first built up an “illusion of relief” with “dark translucent glazes”, and then – just like Apelles – had deliberately “restricted his own range of values” with “a final extremely thin overall toning layer consisting of warm dark pigments and black [!] in a medium essentially of walnut oil with a little resin”. The “varnish” was thus virtually identical as a material to the painting itself – which may explain why it had survived for so long. Many, more soluble, resin varnishes with warm dark pigments had been judged to be earlier restorers’ attempt to impart a deceiving “old masters’ glow” after a harsh cleaning…and removed as alien disfigurements.
Conspicuously, the Technical Bulletin reports made no reference to the Burlington Magazine’s celebrated joust of the early 1960s. Had the Gallery privately informed its recently honoured guest exhibitor of his belated vindication, we wondered? It had not. When we informed Gombrich of this technical corroboration, he replied:
“Many thanks for your letter. I happen to have a birthday these days (87, alas!) and I could hardly have a nicer present than the information you sent me. I don’t ever see the N. G. Technical Bulletin and would have missed their final conversion to an obvious truth! Better late, than never. There is more joy in heaven (or Briardale gardens)…”
We published an account of the National Gallery’s remarkable discovery, and of Gombrich’s response to it, in the November 1998 Art Review (“The Unvarnished Truth”). Three years later in a prefatory remark for the revised 2004 edition of Walden’s book “The Ravished Image”, Gombrich announced: “It is now clear that the position I took forty nine years ago in this matter has been vindicated”. As, indeed, it had been, but curiously, Gombrich declined to mention the fact that an exact analogue of Apelles’ reported practice had been discovered on the work of an associate of Leonardo’s within the conservation studios of the Gallery which had originally dismissed his claims but recently honoured him with an “autograph” exhibition. Instead, he attributed his vindication to research reported five years later in a Burlington Magazine article of January 2001 on work conducted in the conservation studios of the Getty Museum. The article, “‘Amber Varnish’ and Orazio Gentileschi’s ‘Lot and His Daughters'”, by Mark Leonard, Narayan Khandekar and Dawson W. Carr, was certainly an important document. It reported that underneath a thick recent, disfiguring but easily soluble varnish, an older thinner much tougher (but still soluble) varnish “remained directly on the paint surface in many areas.” Examinations of paint samples established that “in some areas at least”, this varnish layer had been applied “very early in the life of the painting”, if not originally.
It had been found that in areas where sections of this early, possibly original varnish had been removed in earlier cleanings, the artistic consequences had been devastating: “One particularly prominent loss was in the neck of the daughter at the left. The older varnish remained intact throughout the face, yet at the line of the chin it had been broken through, and removed throughout the rest of the neck. To the naked eye, it looked as if the final layer of modelling in the neck had been ripped from the surface. Although the preparatory flesh tones were still intact, the carefully nuanced sculptural solidity found throughout the rest of the face was missing.” Although no one noticed it, this last remark echoed and corroborated Annigoni’s Times complaint of 1956 that restorers at the National Gallery pronounce “miracles” when “brilliant colours begin to appear“. Unfortunately, he continued, “what they have found are nothing but the preparative tones, sometimes even of the first sketch, on which the artist has worked carefully, giving the best that is in him, in preparation for the execution of the finished work.”
Welcome as such recent confirmations of longstanding claims by artist and art historian critics of restorations are, it should be noted to how great an extent they are arising after the horse had bolted. The National Gallery has yet to disown any of its post-war restorations – in which period it has restored and often re-restored almost its entire collection and often to seriously deleterious effects (see Figs. 55 to 59b by way of example). As the unwisdom of stripping off old varnishes finally begins to gain acceptance in restoration and curatorial circles, the fact remains that had artists’ testimony been heeded, not only would the ponderous and hugely expensive particle accelerators and other “diagnostic” apparatuses of modern museum conservation departments not have been needed, but that much of our visual cultural patrimony could far sooner have been spared mistreatment. Even before Gombrich’s first 1950 letter to the Burlington, in 1946, a painter, Laura Knight, had explained the intrinsic dangers of picture cleaning with perfectly calm “hands-on” knowledge and clarity in a letter to the Times (27 November):
“With the exception of direct painting, a comparatively modern method, a painter builds his pigment onto canvas or panel – always with the final effect in view. The actual surface of a picture is the picture as it leaves the artist’s hand. The varnish which finally covers the work for protection to a varying extent amalgamates with the paint underneath. Therefore drastic cleaning – the removal of the covering varnish – is bound to remove also this surface painting and should never be undertaken.”
Although Gombrich might well once again have been feeling that “There is more joy in heaven…” this early or original Getty Museum Varnish had not corroborated his Apelles’ thesis to the same degree as the National Gallery’s research on the Giampietrino. There, the surviving original “varnish” layer was not simply naturally discoloured but had been deliberately loaded with “warm dark pigments and black”.
Had Gombrich learned of his own vindication on this point a decade sooner, he might perhaps have been less censorious of those who claimed that Michelangelo, too, had toned down his own colours with black pigment on the Sistine Chapel ceiling. He might even have been less easily persuaded that Michelangelo had confined himself to painting into wet plaster with waterbound pigments. For that matter, even as late as 1993, had Gombrich heeded (as had done his successor at the Warburg Institute, Charles Hope), the hard evidence we presented in “Art Restoration” that the most massively extensive applications of original dark toning layers had occurred on the greatest masterpiece of the High Renaissance – Michelangelo’s Sistine Chapel ceiling – he might have enjoyed his sense of vindication sooner [6]. He might also then have appreciated that the very technical proof of the antiquity of the discoloured layer on the Orazio Gentileschi painting (the fact that this layer had not run into pre-existing age cracks) had been observed more than a century earlier on the surface of Michelangelo’s Sistine ceiling; that the ceiling’s controversially removed a secco passages had, in fact, precisely passed the Getty Cracks Test. As Charles Heath Wilson had discovered and reported when examining the ceiling within touching distance: “There can be no doubt that nearly all of this work is contemporary, and in one part only was there evidence of a later and incapable hand. The size colour has cracked as the plaster has cracked, but apart from this appearance of age, the retouchings have all the characteristics of original work.” Where Brandt had reported in her influential Apollo article that while the restorers had been on the lookout for “the famous secchi”… “they were surprised not find a secco passages”, Wilson had found it without any difficulty (and without any hi-tech apparatus) because: “Retouches in size-colour are easily recognised. Pure fresco has a metallic lustre, but the retouches are opaque. They are also necessarily painted differently from the fresco, have a sketchy appearance, with hard edges, or are hatched [see Fig. 34] where an attempt is made to graduate them.”
Perhaps, even after twenty further years of campaigning, we might need to re-emphasize that earlier testimony of Wilson’s: the size colour had cracked as the plaster had cracked. The glue/size had not run into any pre-existing cracks. That is to say, the size colour had been applied before the plaster had cracked. The plaster is known to have cracked before any restorers went near the ceiling. Ergo, the size colour could only have been applied when the ceiling was new – and therefore Michelangelo alone could have been the author of the secco painting that lay so clearly to view on the dry surface of his frescoes. This hard technical proof cross-links with the even earlier artistic corroboration of Michelangelo’s authorship of the shading and the cast shadows that was found in Clovio’s beautiful hand-drawn sketch of the Jonah shown at Fig. 1. Moreover, had Gombrich heeded our 1993 account, he would also have appreciated that Wilson had, a century earlier, precisely confirmed his Apelles’ dark toning thesis, insofar as Michelangelo’s extensive secco paintwork had been observed to have “consisted of a finely ground black, mixed with a size”.
By accepting Wilson’s firsthand testimony, Gombrich would further have appreciated, pace Mrs Walden, that Michelangelo had put this secco work to the following extensive artistic ends:
“The shadows of the draperies have been boldly and solidly retouched with this size colour, as well as the shadows on the backgrounds. This is the case not only in the groups of the Prophets and Sibyls, but also in the ancestors of Christ in the lunettes and the ornamental portions are retouched in the same way. The hair of the heads and the beards of many of the figures are finished in size colour, whilst the shadows are also thus strengthened, other parts are glazed with the same material, and even portions of the fresco are passed over with the size, without any admixture of colour, precisely as the force of watercolour drawings is increased with washes of gum…These retouchings, as usual with all the masters of the art at the time, constituted the finishing process or as Condivi expresses it, alluding to it in the history of these frescoes, ‘l’ultima mano’. They were evidently all done at the same time and therefore when the scaffold was in place.” And not only! He would have seen an anticipation of the Getty Museum Optical Identification of Aesthetic Injuries Method. That is, Wilson had testified precisely that the faces of the Prophets Daniel and Jeremiah had “undoubtedly been injured by rude hands, suggesting that glazing has been partially or entirely swept away”. Specifically: “The face of Jeremiah seems colourless and painted in black and white only: that the face of Daniel is blotched with brown marks.”
Gombrich had thus been magnificently vindicated twice over on his Apelles Thesis: once on the testimony of a close follower of Leonardo, and once on the testimony of the mighty Michelangelo. He had very graciously accepted news from us of the (lesser) confirmation from within the National Gallery. How sad it is that he had left himself unable to lay rightful claim to the vastly more substantial example of Michelangelo’s Sistine Chapel ceiling paintings. How sad, too, that in defending his error of judgement on Michelangelo, he should have obliged himself to unperson the artistic legacy of the twin giants Michelangelo and Raphael in order to mount an incoherent untenable shabby little exhibition at the National Gallery.
CODA:
Sad as this all is, even now, it is not yet the end of the tragedy. Art historians and their (reversible) tribulations aside, how terrifying it remains that the consequence of the destruction of the precious historic/artistic material that comprised the finishing stages of Michelangelo’s own paintings (and which had protected the fresco surfaces for hundreds of years) is that the remaining now stripped-bare surfaces have been left prey to a persisting polluted atmospheric stew for which no solution has been found by the Vatican’s technical and scientific wizards after two decades of assurances – and twenty-six years after Prof. Brandt disclosed in Apollo that “I have urged repeatedly that problems of climate and pollution control in the Sistine Chapel be given higher priority.” In our post of 21 January, “Setting the Scene, Packing Them In” we cited reports that as many as 20,000 visitors a day were being run through the Chapel. Already, we are outdated. More recent reports put the daily total as high as 30,000 – and report a new pestilence: pickpockets operating within the Pope’s private chapel.
Michael Daley
ENDNOTES:
1. “The Sistine ceiling and the Critics”, David Ekserdjian, December 1987. 2. Wldemar Januszczak, “Sayonara Michelangelo”, 1991. Publisher: Bloomsbury, London. 3. The force of this distinction masked certain inconsistencies. For example, even in Britain during the early post-war period when national schools or tendencies were most pronounced, two highly successful German restorers represented polar opposites in picture restoration’s “ideological” wars. While Helmut Ruhemann lead the controversial school of “Total Cleaning” from within the National Gallery, Johannes Hell championed the philosophy of gradualist and minimalist restorations in which an overall appraisal of the aesthetic consequences of cleaning was maintained at all times. Hell, whose work was admired by members of the Royal Academy, including its painter-president, Gerald Kelly, did so from a successful career within the private sector but his disciples were to gain influential positions in the US museum world. Today, the linkage of competing restoration philosophies to national practices has lost almost all force. All museums – like the Louvre, like the Getty – now sport increasingly powerful science departments and engage nationally and internationally in the kind of professional collaborations between restorers, scientists and curators that operate under the new umbrella discipline know as Technical Art History – and there is scarcely a Technical Art Historian today who would subscribe to a “Total Cleaning” philosophy. Virtually to a person, restorers nowadays declare themselves to be minimalists. 4. Originally published under the title “Rhétorique de l’attribution (Reductio ad absurdum)” in Revue de l’Art, 42, October 1978. Republished as “The rhetoric of attribution – a cautionary tale” in Reflections on the history of art, 1987. (We are indebted to Charles Hope for locating the sources of this vividly recalled but utterly misplaced text.) 5. Charles Hope wrote to Helen Glanville: “The Fichard passage, for example, was not mentioned by them, but by Mancinelli, and I had to consult to Repertorium für Kunstwissenschaft for 1891 to discover the full context; and it was Conti who drew attention to Michelangelo’s purchase of lake in 1508…” In the third James Beck Memorial Lecture, in London, June 2011, Hope discussed the Sistine Chapel ceiling restoration in the context of the National Gallery’s post-war restoration policies. He warned how misunderstandings of key art historical terms such as sfumato and colorito had carried grave and irreversible consequences for much art “as it did in the case of the Sistine ceiling”. Hope’s lecture has been published in full in the ArtWatch UK members’ Journal No. 28. (For membership subscription details, contact Helen Hulson, Membership and Events Secretary, ArtWatch UK, at: hahulson@googlemail.com) 6. …or, even sooner still, had he read Alexander Eliot’s essay “The Sistine Cleanup: Agony or Ecstasy” in the March 1987 Harvard Magazine. In an interview with Einav Zamir on the Artwatch International website (“Evidence of the Eyes”), Eliot recalls: “Frank Mason said ‘We’ve got to protest and stop the cleaning’ to which I responded ‘You can’t buck city hall, let alone the Vatican.’ Then Frank said, ‘Yes, but think of how awful you’ll feel if you don’t try,’ and so he recruited me. I then wrote a piece for Harvard Magazine on the subject, which Jim Beck told me helped persuade him to join us. At that point, the Vatican became noticeably upset.” For more of Eliot and Mason’s views on the Sistine Chapel ceiling restoration, see A Light in the Dark: The Art & Life of Frank Mason and “Divine Light”.
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