Azaleas is painted in oil paint on a commercially woven, even-weave canvas. The canvas was lined with a mixture of beeswax, dammar resin and alum (elemi) in 1996, leaving excess wax-resin mixture on its back. The canvas has 12 horizontal and 10 vertical threads per cm2. The canvas is nailed to a pine stretcher and still retains a few of its original stretcher keys. Various labels referring to exhibitions are attached to the batten down the middle of the stretcher.
There is a whitish-yellow ground layer present over which Ensor painted a thin, white, streaky paint layer. PXRF measurements indicate the presence of lead (Pb), zinc (Zn), and small amounts of calcium (Ca) and iron (Fe). The presence of iron probably indicates the use of an earth pigment in the ground layer; this would account for its yellowish colour.
There is a partial underdrawing present, visible on the infrared image. It is drawn in pencil and either charcoal or black chalk. The latter medium is dry and grainy and mixed into the paint during painting which caused the work to have a mottled look in some areas. The sketch remains visible through the thin paint layers.
Ensor painted a small version of his 1892 The Virgin of Consolation in the top left-hand corner of the work. He sketched in its design with blue and red lines. He then coloured in this sketch with paint without allowing the paint areas to touch. As a result, the sketch remains visible and the ground layer plays a deliberate role in the work. He sometimes used his paint so thin and dilute that it formed drips in some areas, but elsewhere he applied it more thickly. He used fine brushes, some with stiff bristles and others with soft ones, and mixed his paint on the painting itself. In some areas he scraped off paint with the back of his brush and possibly a palette knife too.
While sketching the composition, Ensor made stains with a dilute, dark paint. These are visible through the thin paint layers. These were partially retouched with grey paint, visible on the UV image.
The pigments Ensor used are zinc white, one or more red lakes, a little vermillion, cobalt blue and probably synthetic ultramarine, cadmium yellow, either Emerald or Scheele’s green, chrome green or viridian green and an earth pigment.
In 1996, the work was given a layer of paraloid (B72) varnish.
The painting reacts strongly to fluctuations in relative humidity and has therefore been placed under a ban from loans and transport.
Materials and condition
Support
Canvas
The work is painted on a commercially woven, even-weave canvas.
The canvas was lined in 1996 by Jan Bender with a mixture of beeswax, dammar resin and alum (elemi). As a result, the back of the canvas cannot be studied as the original canvas is no longer visible to the naked eye. However, we can count the threads on the front in those areas where the artist left the ground layer unpainted: 12 horizontal threads to 10 vertical threads per cm2.
Stretcher
The stretcher is made of pine wood with bevelled bars and a batten down its middle. There are 10 stretcher keys. Those along the batten and at lower right are original. The remaining stretcher keys have been replaced, probably during a restoration.
Various labels referring to exhibitions are attached to the central batten.
The canvas has been nailed to the sides of the stretcher. The canvas is taut on its stretcher as a consequence of being lined.
At the time of lining, the tacking margins were secured to the stretcher with brown paper. The stretcher keys were also secured with brown paper and possibly a cellulose adhesive. This is a standard museum procedure to prevent the stretcher keys from falling between the canvas and the stretcher. Therefore, it cannot be dated with any certainty. A lot of leftover wax-resin mixture is visible on the back of the lined canvas, which is an indication that too much of the mixture was used during the lining process.
Although the canvas is currently taut on its stretcher, in 2002, upon its return from an exhibition in Bologna to which it had been loaned, this support was observed to have warped. The canvas was sagging and bulging. After three weeks in a stable climate, the canvas was once again taut, and possibly too taut. This indicates that the canvas, notwithstanding its wax-resin lining, is highly reactive to fluctuations in relative humidity. (condition report 06/03/02)
Partly because of this reactivity, the work has not been loaned in recent years.
Ground layer
The canvas has an even ground layer which was most probably commercially applied. It is whitish-yellow in colour and shows through the paint layer in many places.
The artist mostly left this ground layer unpainted at the edges. He applied an even white paint layer over the ground. Similar layers can be found on other works by the same artist, covering either the entire surface or just parts of it, e.g. Skeletons Fighting over the Body of a Hanged Man (1891, inv. 1857, KMSKA), Still Life with Chinoiseries (1906, inv. 1959, KMSKA), Adam and Eve Expelled from Paradise (1887, inv. 2072, KMSKA), Christ’s Entry into Brussels in 1889 (1888, inv. 87.PA.96, Getty Center). PXRF measurements indicate the presence of lead (Pb), zinc (Zn), and small amounts of calcium (Ca) and iron (Fe) at every spot where measurements were taken. The presence of iron probably indicates the use of an earth pigment in the ground layer, accounting for its yellowish colour.
Under UV light, the boundary between the original ground layer and the subsequently added white paint layer is clear, with the original visible to the right of the white dotted line.
fig 1: Detail of the painting under normal light with the white dotted line indicating where the white paint layer was applied over the whitish-yellow ground layer.
fig 2: Detail of the painting under UV light with the white dotted line indicating where the white paint layer was applied over the whitish-yellow ground layer. A minor difference in fluorescence can be seen to the left and right of the dotted line.
The streaky character of the white paint layer which Ensor applied on the ground layer is clearly visible through a lacunae in the background (blue arrow). The brushstrokes run in the opposite direction to the green paint stroke on top of them (red arrow). In two places, there are lacunae as deep as the original ground layer (areas circled in black). These show up very clearly under UV light.
As well as being streaky, this layer was also applied very dilute, which allowed the warmer colour of the ground to show through.
fig 3: Detail photo of the paint layer under magnification (x 40). There is a lacuna in the blue/green paint layer, through which we can see the thin, streaky, white paint layer covering the whitish-yellow ground layer. There are two lacunae in the white paint layer that run as deep as the whitish-yellow ground layer.
fig 4: Detail of the paint layer under magnification (x 40). The red arrow points to the blue/green paint layer. The blue arrow points to the thin, white, streaky paint layer. The black arrow points to the lacunae that run as deep as the whitish-yellow ground layer and are circled in black.
fig 5: Location of the detail.
fig 6: Location of the lacunae under UV light.
A streaky paint layer is visible on the x-ray. It was thinly applied with a stiff brush in a variety of directions. This may be the white layer that Ensor applied over the whitish-yellow ground. This white layer probably contains lead, as it shows up on the x-ray and because all the PXRF measurements indicate the presence of lead.1
Furthermore, palette knife strokes can also be seen on the x-ray which have nothing to do with the depiction of the azaleas. These are not visible in raking light either. These paint marks are either located beneath the paint/ground layers of Azaleas or there are palette knife marks present on the back of the canvas. This cannot be verified, as the work has been lined so that the original canvas can no longer be seen.
fig 7: X-ray of Azaleas with its mottled effect, probably caused by the application of the thin white paint layer applied with a stiff brush on top of the ground. The majority of the palette knife strokes visible on the x-ray do not correspond to anything visible on Azaleas.
Underdrawing
Ensor used various techniques when developing the underdrawing for this work. In several places, we can see a clear underdrawing in a dry medium, probably pencil. For example, this is the case of the two masks/faces at the top right corner. It is also clear that the demarcation of the scene at the top left corner is drawn with a pencil and ruler. The artist did not subsequently cover these lines entirely with paint, so they remain visible in the end result.
Pencil lines can also be seen in the legs of the statue at the far-left front.
fig 8: Detail of the right-hand edge of the work where a mask/face can be seen. This mask was sketched in pencil prior to being painted, as shown on the infrared image.
fig 9: Detail of the infrared image of the right-hand border of the work with the pencil sketch visible under the paint layer.
fig 10: Detail of the top left-hand corner of the work showing how the pencil lines that show on the infrared image were drawn with a ruler to demarcate the painting within the painting in the background of Azaleas: James Ensor, The Virgin of Consolation, 1892, oil paint on panel, 40 x 38 cm, private collection.
fig 11: Detail of the top left-hand corner of Azaleas in normal light.
In addition to these fine pencil lines, traces of a coarser-grained, dry material, possibly charcoal or some type of black chalk are present; these are clearly visible on the infrared image. These lines are smudged, which is typical for a medium of this sort, whose grainy texture is quickly spread or partly removed by the application of overlying paint layers. These lines are visible in the central part of the composition, especially in the two flower baskets and in the flowers suspended to the right of the painting within the painting
.
Furthermore, grains of black pigment can be seen in various places in the paint layer, giving the work a somewhat blotchy look. This is probably the result of charcoal grains migrating across the surface of the painting and settling in the wet paint.
fig 12: Black grains in the paint layer from the compositional sketch in charcoal or black chalk. Image under magnification (x40).
fig 13: Black line between the two flower baskets – probably part of the compositional sketch in charcoal or black chalk.
fig 14: Black line between the two flower baskets – clearly visible on the infrared image. This line is probably part of the compositional sketch in charcoal or black chalk.
There are several clearly marked pencil lines in the lower part of the painting, which were previously mistakenly interpreted as signs of vandalism (after the exhibition Ensor Unmasked
in 2011), but are indeed from the artist’s hand. Similar pencil marks are present near the signature as well. These lines run partly above and partly beneath the paint layers. For example, this is the case in the detail of the tablecloth – the line runs over the yellow paint of the tablecloth but is partly covered by the green paint of the leaf. Some of the lines are not covered by paint. It is unclear what the artist’s intention was here, but he did not feel a need to paint them away.
fig 15: Partly covered pencil line.
fig 16: Clear use of pencil in the signature.
Paint layer
Technique
Azaleas is painted with oil on canvas where a range of techniques were combined during painting.
Ensor used red and blue painted lines when developing his design for the small scene at top left (the painting within the painting). These lines are grainy in texture which suggests that the paint was applied quite dry. The sketchy blue lines of the head in the self-portrait have remained fully visible in the end result. Under magnification we can see that these lines have partly intermixed with the white paint layer below. This latter layer must therefore have still been wet at the time the figures were added.
fig 17: Detail at top left showing the design of the self-portrait sketched in with paint and a thin brush.
fig 18: Detail of the eye of the self-portrait at top left of the painting under magnification (x40).
The face of the Madonna is developed in a similar manner in red paint. Here, the painted lines were partly obscured beneath the subsequently applied paint. Ensor chose not to fill in the various coloured areas completely, as can be seen in the face and its outline, as well as in the Virgin’s clothes and in other parts of the painting. In many places, the coloured areas do not touch allowing the underlying tone of the ground layer to play a role in the painting. This would have allowed Ensor to work quickly. The lower half of the easel on which the painting of the virgin is displayed is left entirely unpainted. Therefore the whitish-yellow ground and the thin white imprimatura serve as the colour of the easel.
The artist used a fine, hard-bristled brush to fill in the area of The virgin of Consolation
with coarse brushstrokes going in all directions. For the highlights, he used thicker paint applied with a similar brush. For the details of the face he used a finer, soft-bristled brush applying the paint more dilute.
fig 19: Face of the Virgin.
fig 20: Grainy texture of the sketch in red (x25).
fig 21: Detail of the painter’s easel showing how the lower half of the easel has remained unpainted. It is the colour of the ground and the thin white paint layer which determine the colour of the legs.
fig 22: The same detail under UV light in which the unpainted parts of the composition are easier to distinguish with their light blue fluorescence.
By choosing to apply his paint in various ways, Ensor created a subtle play on textures to convey the material qualities of the objects he was painting. It is in the execution of the plants that we encounter the greatest variety in textures.
The flowers of the azalea were painted rapidly with a coarse brush, causing a streaky effect. Ensor worked predominantly with a red lake, mixing it directly on the canvas with white paint to create a lighter shade. The red lake is also combined with a darker colour for shadowed areas, applying these on top of the red tone he had already applied. He also built up the green leaf of the plant from a ground tone, adding white for highlighted areas, and intermixed with darker tones for the shadows. He added the outline of the leaves with rapid, dark green strokes and added yellow-toned accents here and there.
fig 23: Detail of the azaleas showing how the red lake was applied with a stiff brush, leaving visible brushstrokes.
fig 24: The green leaves of the azaleas were worked up from a ground tone mixed with white for the highlights and with a darker green for the shadows.
In contrast to the leaves, the flowers are painted with thicker paint. The marks left by the hard bristles are very noticeable.
The paint has an unusual, waxy texture with a distinctive pattern of craquelure. The adhesion between this paint layer and the underlying paint and ground layers appears problematic. Under magnification, a granular structure is visible in the largest cracks of the paint layer. This is evidence of material loss.
fig 25: Detail of the red lake in the azaleas under magnification (x40) showing extensive craquelure.
Ensor used dilute paint for the leaves of the plant at the right of the painting. In some areas, his technique was closer to watercolour than to oil paint. Examples include brushstrokes that end in drips. He added a few highlights in thicker paint on top of this diluted paint.
fig 26: Detail of the painting showing the leaves painted in diluted green paint Dilute to such an extent that drips formed in several places.
fig 27: Detail of the painting in raking light showing highlights added in thick paint on top the green plant’s thin, dilute paint layer.
Ensor also used dilute paint for the wicker baskets. His brushstrokes were streaky with quick strokes added on top of the horizonal basketwork. He employed a very different technique for the porcelain statue left of the basket. Here, he overlaid his paint strokes quickly, piling up the paint until it was quite thick. He blended his colours together on the canvas rather than on his palette. For the shadow by the statue’s leg, Ensor used the back of his brush to scrape away some of the wet paint. Similar scraped paint can also be found here and there in the pink azalea flowers, but to a lesser extent.
fig 28: Detail of the lower left corner of the painting where it is visible how the legs of the porcelain sculpture were applied with thick paint. This is in strong contrast with how the wicker basket on the right was painted in transparent, dilute paint. On the far left of the image we can see how Ensor scraped paint off the blue paint layer with the back of his paintbrush.
In the scene at top left, Ensor scraped paint away for figurative purposes. For example, he used the back of his paintbrush to scratch flowers into the green background and seems to have used a palette knife to scrape paint away for the flower with the pink centre.
fig 29: In this part of the painting, Ensor scraped flowers into the still wet paint layer with the back of his brush or a palette knife.
fig 30: Detail photo of a flower with scraped paint under magnification (x9).
The background was created around the already painted flowers and plants. As seen elsewhere in Ensor’s work, the brushstrokes of the background are applied diagonally, in this case from top right to bottom left. Ensor used shades of blue, white, pink and green, running a vertical paint stroke through them in some places. Ensor may have wanted to create a mother-of-pearl effect, like the inside of a shell.
He also played with texture by dragging and dabbing a hard-bristled brush in nearly dry paint. We can see this, for example, in the flowerpot, where he created the appearance of a rough surface.
fig 31: Diagonal application of the background with some short, vertical paint strokes.
fig 32: Rough surface texture of the flowerpot.
Damage and restorations
Under UV light, pronounced drips or stains can be observed in the left-hand azalea. These black stains are visible to the naked eye, mostly in the dark red of the flowers and are inherent to Ensor’s technique, belonging to the design stage of the painting. The artist worked with dilute paint causing drips on the surface. These drips are found beneath the actual paint layer, but the transparency of the upper paint means they remain visible.
In various places, grey-brown paint strokes have been applied on top of these black drips. Although these look like retouches on the UV image, they appear to be original paint strokes applied by the artist to locally camouflage the black drips. The fact they are so visible under UV light suggests that Ensor did not add these strokes immediately after completing the painting. The painting was donated to the museum in 1937 by Oscar Fischer. In 1944, it was photographically documented by the KIK.2 These apparent retouches
are already visible on that photo. Therefore, as the work was only restored in 1996, these retouches
must pre-date 1937.
It is one of the rare paintings in the collection where drips caused by the artist’s technique have been covered over.
fig 33: Black blotches visible beneath the paint layer. Some of these have been partly concealed with greyish paint.
fig 34: The grey paint layer concealing the black drips or stains is particularly visible in the UV image, showing up as dark blue paint strokes.
fig 35: Photograph of 1944 from the KIK-IRPA collection on which the black drips or stains are visible. CC-BY KIK-IRPA, Brussel.
https://www.kikirpa.be/nl/fig 36: Recent photograph in normal light for comparison.
In the small scene at top left a lot of white globules are present in the paint layer. A similar phenomenon has been observed in other works in the collection. It is unclear whether this is simply the texture of the paint layer or whether it is a sign of some sort of degradation process. The globules might be metal soaps.
fig 37: Location of the detail photo of the white globules.
fig 38: Grainy texture of the white paint layer under magnification. These could be metal soaps.
Signature
At lower right in red paint and partly in pencil, Ensor
.
fig 39: Signature in normal light.
fig 40: Signature in the infrared image showing the pencil lines present under/on top of the paint layer.
Pigment use
The descriptions below are based on measurements taken with PXRF on 25 different points on the painting by Dr. Geert Van der Snickt in the context of his doctoral dissertation.3
White: Nearly all the measurements detected zinc (Zn), lead (Pb), small amounts of calcium (Ca) andiron (Fe). The presence of iron probably indicates the use of an earth pigment in the ground layer; this would account for its yellowish colour. The artist opted for zinc white paint in the paint layer itself.
Red: Ensor predominantly used one or more sorts of organic red lake. These cannot be detected with PXRF The same colour appears in many of Ensor’s works, above all from 1890 onwards, with the occasional earlier exception (unless, of course, they are later reworkings). Ensor used this red lake extensively in this work. This can be seen from its typical pink/orange fluorescence under UV. Ensor applied this red lake (a pigment usually associated with translucent glazes) in a very pasty manner; this partly explains its heavy craquelure. In addition to this lake, the measurements also included traces of mercury (Hg), indicating the use of vermilion.
Blue: The measurements established the use of cobalt. Here, Ensor applied this blue in a more dilute form and often mixed with white, in contrast to his works of the 1890s. Not all the measurements taken in blue areas detected cobalt, so it is probable that Ensor used two different blue paints here, of which the other may be a synthetic ultramarine. Ensor used a combination of two different shades of blue in several works.
Yellow: Typical for Ensor’s late period, he used cadmium yellow in this painting.
Green: Ensor also opted to use a combination of different shades for the green areas. The green in the azalea consists of a combination of copper arsenate (most likely Emerald green) and chromium oxide (chrome green or viridian green). Chrome was also measured in the other plant, but no copper was detected there. Iron was measured in the brown shades, which indicates the use of an earth pigment.
Damage and restoration:
The damage is mostly concentrated in the red lake. That paint layer is very fragile from the heavy craquelure and there is material loss in several places. There are also traces of restorations as there are remnants of wax and cotton wool found in several places in the paint layer.
Small paint chips are present on top of the paint layer here and there. The most probable explanation is that no consideration was given to loose paint flakes during the re-lining process and therefore paint flakes got attached in the wrong places. Lacunae are present in at the edges of the painting as well. In some places there are deposits of grime on the red lake. These grainy particles have stuck to the top layer of the red lake. This may have occurred when the canvas was lined; the heat employed would have made the paint layer slightly sticky.
fig 41: Detail with visible small islands (x25).
fig 42: Detail: grime embedded in the red lake (x25).
Surface finish
In 1996, Jan Bender carried out a restoration and applied a paraloid varnish (B72). His restoration report also records using a solvent to remove several layers of varnish. It is unclear whether Ensor varnished the work himself, but Bender’s comments suggest that he may have.
History of the painting
Acquisition history
Oscar Fischer Collection, Antwerp; donated to the museum by Oscar Fischer, Antwerp, 1937.
Restoration history
5/08/1996 condition report by Jan Bender, KMSKA archives, RES 0957/2346. With age,
the canvas has become badly cracked and dry it has started to sag in folds. It is also too weak to be retensioned without risking tears. There are disturbing cracks spread across the entire surface. Paint flakes and matte and blind layers of varnish seriously disrupt the aesthetic appearance of the painting.
5/08/1996, treatment report by Jan Bender, KMSKA archives, RES 0957/2346. Nourished the back of the original canvas with dilute colourless resin (dammar resin), to reduce the porosity of the canvas and make it less permeable to beeswax. Followed by attaching a new canvas support with beeswax, dammar resin and alum as an adhesive. Both canvases were pressed together under pressure to re-flatten the original canvas. A solvent was carefully applied to the old varnish layers which were then removed. Damaged pieces of paint were sealed and retouched with light-resistant paint (tempera). A new protective layer of colourless varnish (polaroid B72) was applied.
17/09/1996 condition check, overall condition: good.
5/10/1997 condition check.
7/08/1999 treatment report by Lizet Klaassen: condition report – internal treatment proposal: fixing stretcher keys; adding felt in the rebate; installing new hanging system and barcode.
23/10/2001 treatment report by Gwen Borms.
23/10/2001 condition report by Gwen Borms, general condition: sound.
06/03/2002 deformations observed across the entire surface, above all in its middle.
Loan/Transport ban: unlined work that responds very strongly to fluctuations in climate.
Exhibition history
1939, Paris, La Gazette des Beaux-Arts et Beaux-Arts, Faubourg Saint-Honoré, Ensor, no. 83;
1948, Buenos Aires, Museo Nacional de Bellas Artes, Exposicion de Arte Belga Contemporaneo, no. 26, image;
1953, São Paulo, Museu de Arte Moderna de São Paulo, Il Bienal, no 22;
1968, Venlo, Cultureel Centrum, Het bloementhema in de schilderkunst, no. 14, image no. 5;
1983/1984, Kobe, The Museum of Modern Art, James Ensor, no. 64, image p. 98;
1984, Kamakura, The Museum of Modern Art, James Ensor, no. 64, image p. 98;
1984, Saitama, The Museum of Modern Art, James Ensor, no. 64, image p. 98;
1984, Sendai, Miyagi Museum of Art, James Ensor, no. 64, image p. 98;
1991, Norfolk, The Chrysler Museum, A Festival of Flowers. Flowers in Flemish and Belgian painting, image;
1995, Stockholm, The State Museum of Prins Eugens Waldemarsudde, A Festival of Flowers. Flowers in Belgian Painting from Neoclassicism to Expressionism, image;
1996, Brussels, Galerie van het Gemeentekrediet, Bloemen in de schilderkunst van de 16de tot de 20ste eeuw, no. 53, image p. 143;
2001/2002, Bologna, Galleria d'Arte Moderna, The Nature of Still Life. From Manet to the Present Day, no. 15, image p. 66;
2010/ 2011, Brussels, ING Culture Center, Ensor Unmasked, no. 253, image p. 223;
2011, The Hague, Gemeentemuseum, James Ensor. A Visionary Universe, image p. 142;