Courtauld Impressionists: From Manet to Cézanne @ the National Gallery

Samuel Courtauld (1876 – 1947) was rich. He was born into the Courtauld family, which, over several generations, had built up a successful fabric company based in Essex. After a good education and trips abroad to study the business, Courtauld took over as general manager in 1908, and then served as chairman from 1921 to 1946. Under his guidance the firm developed and marketed rayon, an artificial fibre and inexpensive silk substitute, growing into a major international company.

Courtauld became interested in art after seeing the Hugh Lane collection on exhibition at the Tate Gallery in 1917. However, his career as a collector only started in 1922 following an exhibition of French art at the Burlington Fine Arts Club. He was particularly taken with the Impressionist and Post-Impressionist paintings, which were still viewed with suspicion in Britain, even in the art establishment. On seeing a Cézanne, he said:

At that moment I felt the magic, and I have felt it in Cézanne’s work ever since.

He decided to become a full time collector and, during the 1920s Courtauld created two collections in parallel:

  1. in 1923 he created a fund, the Courtauld Fund, of £50,000 to acquire modern French paintings for the National Gallery, which worked through a board of trustees and a network of dealers
  2. at the same time, he also bought works for his own private collection which eventually grew to more than seventy works

This latter set, he displayed at the London house he rented for the purpose, Home House, 20 Portman Square.

Courtauld had always shared his passion with his wife, Elizabeth and when she died in 1931, his interest in collecting waned. However, the experience had shown him that there was a need for sophisticated modern art scholarship, and so he worked with other sponsors and partners to found the Courtauld Institute of Art in 1932.

The Courtauld, as it is generally referred to, went from strength to strength. It is now among the most prestigious institutions in the world for the study of the history of art and conservation, and well known for the disproportionate number of directors of major museums drawn from its small body of alumni.

The Institute houses the Courtauld Gallery which is like a miniature version of the National Gallery, showcasing masterpieces of Western art from medieval times until the turn of the 20th century. Ever since its inception the Gallery has been renowned for the collection of Impressionist and Post-Impressionist paintings which Samuel Courtauld gave to it 85 years ago.

In autumn 2018 the Courtauld Gallery closed for a major refurbishment. What to do with its priceless art works? It occurred to someone to reunite the French paintings Courtauld gave to his Institute, with the works by the same masters which his trust acquired for the National Gallery back in the 1920s.

Hence this exhibition. Courtauld Impressionists: From Manet to Cézanne brings together the 26 French masterpieces from the Courtauld Gallery and reunites them with the paintings acquired for the National Trust by the Courtauld Trust back in the 1920s.

The result is three large gallery rooms displaying forty three paintings by twelve master of the period in straightforward chronological order. The artists are:

  1. Daumier
  2. Manet
  3. Monet
  4. Renoir
  5. Pissarro
  6. Seurat
  7. Cézanne
  8. Bonnard
  9. Toulouse-Lautrec
  10. Gauguin
  11. Van Gogh

The exhibition tells two stories at the same time. On the surface this is yet another excuse (or opportunity) to trace the epoch-defining development of French painting from the 1860s to the 1900s, with lengthy wall labels about each of the twelve artists, and how they contributed to Impressionism and what became known, rather unsatisfactorily, as post-Impressionism – and then a wall label for each painting, telling us about the subject matter and treatment.

But each of the wall labels, and the audioguide, also give the stories behind Courtauld’s purchases of each of the paintings. These are sometimes convoluted, often expensive, and sometimes funny. It was intriguing to learn that Vollard, the famous art collector and dealer, who had had his portrait done by Renoir, Pissarro and others, actively wished a representation of himself to be displayed in Britain and so encouraged Courtauld to buy Renoir’s portrait of him. It cost Courtauld a whopping 800,000 francs.

Other anecdotes include the fact that the sketch of Manet’s famous Dejeuner sur l’herbe set him back £10,000, and that Courtauld bought van Gogh’s searing painting of a wheatfield for a mere £3,300, a lot of money at the time – but think what it would fetch now!

Money and philistinism

Although the curators prefer to think of this as a story about Cortauld’s ‘visionary and extraordinarily generous’ approach to art, it is also a story about money. The power of money, the necessity of money, the unavoidable imbrecation of art and money.

And peeping through the chinks in this mostly positive account of one man’s taste, drive and generosity – there is another story about the staggering philistinism of the British. It really is worth reflecting that, in the 1920s and into the 1930s, major British art institutes chose not to buy Impressionist and Post-Impressionist art because they didn’t think it was proper painting.

What barbarism! What philistinism! (That, in case you didn’t realise it, is why so much Modern French art ended up in America; rich Yanks snapped up works which the hoity-toity Brits turned their noses up at).

It is shaming to learn that the National Gallery refused, twice, to buy Degas’s masterpiece Young Spartans Exercising. Courtauld bought it and only 15 years later was it bequested to the National who had, at last, grasped its importance.

Similarly, it is appalling to learn that when the Cézanne self-portrait which Courtauld had acquired was first publicly displayed, in 1934, it had to be glazed to protect it from any attempts to deface and vandalise it!

Greatest hits

The exhibition includes some of the absolute all-time high points of Impressionism and Post-Impressionism, including La Loge by Renoir, Young Spartans Exercising by Degas, Seurat’s immense Bathers at Asnières, Cézanne’s Card PlayersTe Rerioa by Paul Gauguin

Personal favourites

From this treasury, I emerged liking four paintings in particular. This Degas painting of a woman at a window has always been tucked away in a corner when I’ve seen it at the Courtauld Gallery. This has added to its sense of mystery. But what I mainly like about it is the unfinished, dark obscurity of the image. In general, like strong defining black lines, disegno, outlines – and here you can feel Degas’s draughtsmanship performing an piece of magic – caught in the act of making a woman of flesh appear from a sequence of lines and dark colours. Next to it is a classic painting of two ballet dancers on stage, prettier, more finished. But for me, Woman at a window has always had atmosphere.

Woman at a Window (1871-72) by Hilaire-Germain-Edgar Degas © The Samuel Courtauld Trust, The Courtauld Gallery, London

Woman at a Window (1871-72) by Hilaire-Germain-Edgar Degas © The Samuel Courtauld Trust

Talking of pairs, take the corner of the room where the Manet section ends and the Monet section begins. The Monets include a wonderfully light luminescent view of the River Seine titled Autumn Effect at Argenteuil. (Like most Monets it looks far better seen from across the room; the further away the more luminous it becomes.)

Autumn Effect at Argenteuil (1873) by Claude Monet © The Samuel Courtauld Trust, The Courtauld Gallery, London

Autumn Effect at Argenteuil (1873) by Claude Monet © The Samuel Courtauld Trust

Famous though they are, I didn’t like the handful of other Manets on show here. They confirmed my feeling that I don’t like Manet that much, I really do find his paintings scrappy and unfinished, often with errors of draughtsmanship and perspective which annoy me.

Except for this view of the Seine which he painted around the time he got to know Monet and had gone to stay with him at his Seine-side house. Here you can see Manet copying Monet’s use of broken brushstrokes and light, airy palette. But what I like Manet’s river study, why I prefer it to Monet’s, is the intensity of the black – in the ribbon round the woman’s hat, in the shadow of the boats – and the deepness and richness of the blue tone he’s used for the river water, darker, fuller, richer than the light frolicsome Monet. For me, this makes the picture much more biting, punchy, virile.

Which one do you prefer?

Banks of the Seine at Argenteuil (1874) by Edouard Manet, on loan to The Courtauld Gallery from a private collection © The Samuel Courtauld Trust

Banks of the Seine at Argenteuil (1874) by Edouard Manet, on loan to The Courtauld Gallery from a private collection © The Samuel Courtauld Trust

Having established that I like strong blacks, it was no surprise to me that I kept returning to Renoir’s La Loge i.e. the box at the theatre.

In reviews of other Impressionist exhibitions, and books, I’ve already pointed out that it seems to me Renoir established a ‘look’, a style, a brand, early on and stuck to it for most of his career (until, admittedly, he drastically changed in the last decade of his life).

The commentary gives a sophisticated analysis of the picture. It explains that a Paris theatre box was a place to see and be seen. It explains that the woman is on show, knows she is on show, is looking straight at us, putting us right there, maybe in a box opposite, an effect subtly reinforced by the way a) her male companion is busy scanning the crowd with opera glasses, maybe looking for another beautiful woman to ogle at (as we, it is implied, as observing this one) and b) the way the details at the periphery (her hands, the edge of the box) are blurred as if we are looking at her through opera glasses, which blur the edge of vision.

All this is true, but I just like the pattern of her dress, the strong black and white lines – and above all, the porcelain beauty of the woman’s face, pale and perfect. It took me a while to realise that this is because her face is the only part of the composition which is painted smoothly and with great finish – everything else is blurred and unsettling to look at. Whichever detail you zero in on, you end up being pushed back to her perfect face as a point of rest. I find it hypnotic.

The Theatre Box (1874) by Pierre-Auguste Renoir © The Samuel Courtauld Trust

The Theatre Box (1874) by Pierre-Auguste Renoir © The Samuel Courtauld Trust

The three Gauguin paintings on display are important but don’t quite do it for me. I like Gauguin but, for all the talk of the exotic South Seas, the selection here was surprisingly drab, dominated by a worn out brown colour. (Poor Bonnard had a little section next to Gauguin and van Gogh; his two works were knocked completely into the shade by them).

No, the masterpiece of the final room is A Wheatfield, with Cypresses by Vincent van Gogh. Whereas reproductions tend to improve Monet’s Impressionist works (often a bit scrappy when seen close-up), no reproduction can convey the extraordinary turmoil and rhythm and energy of this van Gogh.

It is a revelation, a masterpiece which, for me, towers above all the other masterpieces on show. Being able to go right up to the surface and investigate the complex technique of whirls and splashes of thick oil van Gogh used to create the impression of tumult and dynamism is worth the price of admission by itself. It really is. The closer you get, the more you can see the gaps in the swirling brushstrokes and the raw canvas beneath, can see the way the red blodges at the bottom have been added to the already thick layers of paint to convey poppies. But the extravagance of the impasto, the thick layers of paint used, only adds to the tremendous emotionality of the picture. Viewed in a smoother-out reproduction (as below) it is great, but viewed in the flesh, close-up, it is like being struck by lightning.

A Wheatfield, with Cypresses (1889) by Vincent van Gogh by the Courtauld Fund, 1923 © The National Gallery, London

A Wheatfield, with Cypresses (1889) by Vincent van Gogh by the Courtauld Fund, 1923
© The National Gallery, London

A mystery

You exit the three big gallery rooms which contain these masterpieces into the shop (fridge magnets, books, tote bags etc) and then into room 41, another big National gallery room. This one follows on naturally from the subject matter of the previous exhibition with works by Monet and van Gogh among other turn of the century French artists and then….

You notice that no fewer than eight of the paintings in this room have a label next to them indicating that they, too, were collected by the Courtauld Trust and donated to the National Gallery. They should, in other words, be included in the exhibition. Why aren’t they?

Lack of space? But surely the existing 40 or so paintings could have been shuffled up a bit… or display panels could have been erected in the middle of the rooms, as I’ve seen done at countless exhibitions.

The paintings which are part of the Courtauld bequest but are not included in the Courtauld exhibition include a Monet waterlilies, a view of the St Lazare station in Paris, and van Gogh’s Sunflowers (bought by the Courtauld Fund, 1924) and van Gogh’s chair (bought by the Courtauld Fund, 1924).

If the exhibition aims to bring together all the Courtauld’s Impressionist and Post-Impressionist works in one place… these should without doubt have been included in the exhibition.

Maybe… maybe they’re too famous. Over six million people visit the National Gallery every year. These paintings are among the most popular attractions. Maybe the National Gallery is forbidden to make people pay to see them. Or maybe it was just discretion on the part of the curators, knowing that many people might make the pilgrimage down to London, or from abroad, many to see these treasures… and then be pretty disgruntled to discover they had to pay to see them.

Maybe displaying eight painting which Courtauld bought for the nation outside an exhibition about paintings which Courtauld bought for the nation, was the only solution.

Van Gogh's chair by Vincent van Gogh. Not in the Courtauld Impressionist exhibition, but free to see at the National gallery

Van Gogh’s chair by Vincent van Gogh. Not in the Courtauld Impressionist exhibition, but free to see anytime at the National Gallery

Video

Exhibition curator Anne Robbins talks us through two pivotal works bought by Courtauld, including Manet’s last great masterpiece, ‘A Bar at the Folies-Bergère’.


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A Closer Look: Colour by David Bomford and Ashok Roy (2009)

This is another superbly informative, crisply written and lavishly illustrated little book in The National Gallery’s A Closer Look series. To quote the blurb:

A Closer Look: Colour explores how painters apply colour, describes different types of pigments, and outlines optical theories and artists’ treatises. The authors explain the effect on colour of the artist’s chosen medium, such as oil, water or egg tempera, and the dramatic impact of new pigments.’

It ranges far and wide across the National Gallery’s vast collection of 2,300 art works, selecting 80 paintings which illustrate key aspects of colour, medium and design. The quality of the colour reproductions is really stunning – it’s worth having the book almost for these alone and for the brief but penetrating insights into a colour-related aspect of each one.

They include works by Seurat, Holbein the Younger, Corot, Duccio, David, Chardin, Ghirlandaio, Monet and Van Dyck in the first ten pages alone!

Aspects of colour

Colour quite obviously has been used by painters to depict the coloured world we see around us. But it has other functions, too. Maybe the two most obvious but easily overlooked are: to represent depth and create the optical illusion of three dimensions on a two dimensional surface; and to reinforce this by indicating sources of light.

Depth A common indication of depth is recreating the common observation that objects at a distance fade into a blue-ish haze. This is often seen in Renaissance paintings depicting increasingly hazy backdrops behind the various virgins and main figures. This is known as aerial perspective.

Light Sources of light need to be carefully calculated in a realistic painting. The book shows how the effect of light sources is achieved by showing glimmers of white paint on metallic objects or even on duller surfaces like wood. There is a particularly wondrous example in Lady Elizabeth Thimbelby and her Sister by Anthony Van Dyck. The authors give a close-up to show how the colour of the yellow dress worn by the main subject is reflected on the bare skin of of the little angel, and even in the catchlight in his right eye, an indication of the depth of thought which goes into his compositions.

Shadows turn out to be an entire subject in themselves. For centuries painters improved their depiction of shadows, at first using grey colours for the shadows of buildings, but quickly realising that the most shadowed things around us are fabrics. Dresses, cloaks all the paraphernalia of costume from the Middle Ages to the turn of the 20th century, involved reams of material which folded in infinite ways, all of them a challenge to the painters’ skill. At the very least, painting a fabric requires not one but three colours: the core colour of the fabric itself, the fabric in shadow, the fabric in highlight, reflecting the light source.

The human eye is not a mechanical reproducer of the world around us. It has physiological quirks and limitations. The book evidences the way that, dazzled by orange sunsets, the human eye might well see evening shadows as violet. Quirks and oddities like this were known to various painters of the past but it was the Impressionists who, as a group, set out to try and capture not what the rational mind knew to be the colour, but the colours as actually perceived by the imperfect eye and misleadable mind.

Emotion In the later 19th century artists across Europe made the discovery that intensity of colour can be used to reflect intensity of emotion. Probably the most popular painter to do this was van Gogh whose intense colours were intended to convey his own personal anguish. This approach went on to become the central technique of the German Expressionist painters (although they aren’t represented in the book, along with all 20th century art, because the National Gallery’s cut-off point is 1900).

Symbolism In earlier centuries, more than its realistic function, colour had an important role in a painting’s symbolism i.e. certain colours are understood to have certain meanings or to be associated with certain people or qualities. The most obvious period is the Renaissance, when the Virgin Mary’s cloak was blue, Mary Magdalene’s cloak was red, St Peter’s cloak was yellow and blue, and so on. From early on this allowed or encouraged Renaissance painters to create compositions designed not only to show a (religious) subject, but to create harmonious visual ‘rhythms’ and ‘assonances’ based on these traditionally understood colour associations.

Pigments and Media

This is dealt with quite thoroughly in another book in the series, Techniques of Painting. There we learn that paint has two components, the binding medium and the pigment. Over the centuries different pigments have been used, mixed into different binding mediums, including egg, egg yolks, oil, painting directly into wet plaster (fresco) and so on.

Painting is done onto supports – onto walls, plaster, or onto boards, metal, canvas or other fabrics. All of these need preparing by stretching (canvas) or smoothing (wood), then applying a ground – or background layer of paint – to soak into the support. Painters of the 14th and 15th centuries used a white ground. In the 16th, 17th and 18th centuries, artists experimented with varying the tone of the ground, which significantly alters the colour of the works painted onto them.

Hardening Binding mediums dry out in two ways: watercolours and synthetic resin paints by simple evaporation. Drying oils such as linseed, walnut or poppy oil harden by chemical reaction with the oxygen in the air. Egg tempera, used extensively in the 14th and 15th century, dries by a combination of both.

This may sound fairly academic but it profoundly affects the whole style and look of a painting. Because tempera dries so quickly (especially in hot, dry Italy) shapes and textures are best built up by short hatched strokes.

This is a detail from the Wilton Diptych (1397) where you can see the way the skin of the Virgin and child and angels has been created by multiple short paint strokes of egg tempera.

Whereas, because oils are slow drying, they allow the artist to merge them into smooth, flowing, continuous transitions of colour. Oil paints = more flowing.

In this detail from Belshazzar’s Feast by Rembrandt, you can see how the gold chain has been rendered with a really thick layer of gold paint. Laying on very thick layers of oil paint is called impasto.

In general, oil paint looks darker and richer than paint made using water-based media such as egg tempera, glue or fresco, which appear lighter and brighter.

Age and decay Painting was, then, a highly technical undertaking, requiring the painter to have an excellent knowledge of a wide range of materials and chemical substances. Different media dry and set in different ways. Different pigments hold their colour – or fade – over time. And this fading can reveal the ground painted underneath.

One of the most interesting aspects of the book is the specific examples it gives of how some pigments have faded or disappeared – sometimes quite drastically – in Old Master paintings.

In Duccio’s The Virgin and Child with Saints Dominic and Aurea, the face and hands of the figures show clearly how the lighter pigments painted in tempera have faded or flaked off allowing the green underpaint to come through. The Virgin was not meant to look green!

Bladders to tubes Pigments had to be ground by hand and mixed in with binders in studios for the medieval and Renaissance period. There are numerous prints showing a Renaissance artist’s studio for what it was, the small-scale manufactory of a craftsman employing a number of assistants and making money by taking on a number of students.

In the 18th century ready-mixed pigments could be transported inside pigs’ bladders. The early 19th century developed the use of glass or metal syringes. But it was in 1841 that an American, John Rand, developed the collapsible metal tube. This marked a breakthrough in the portability of oil paints, allowing artists to paint out of doors for the first time. A generation later a new school arose – the Impressionists – who did just this. Jean Renoir quotes his father, the painter Pierre-Auguste, as saying:

Without paints in tubes there would have been no Cézanne, no Monet, no Sisley or Pissarro, nothing of what the journalists were later to call Impressionism.

Biographies of colours

Primo Levi wrote a classic collection of short stories based on The Periodic Table of chemical elements. It crossed my mind, reading this book, that something similar could be attempted with the numerous pigments which artists have used down the ages.

This book gives a potted history of the half a dozen key colours. It explains how they were originally produced, how different sources became available over the centuries, and how the 19th century saw an explosion in the chemical industry which led to the development of modern, industrially-manufactured colours.

Blue

  • Prime source of blue was the ultramarine colour extracted from the mineral lapis lazuli, which was mined in one location in Afghanistan and traded to the Mediterranean.
  • A cheaper alternative was azurite, which was mined in Europe but had to be ground coarsely to keep its colour, and is also prone to fade into green, e.g. the sky in Christ taking Leave of his Mother by Albrecht Altdorfer (1520). Many artists painted a basic wash of azurite and then used the much more expensive ultramarine to create more intense highlights.
  • Indigo is a dye extracted from plants. At high intensity it is an inky black-blue, but at a lesser intensity also risks fading.
  • A cheaper alternative was smalt, manufactured by adding cobalt oxide to molten glass, cooling and grinding it to powder. It holds its colour badly and fades to grey.
  • In the early 1700s German manufacturers stumbled across the intense synthetic pigment which became known as Prussian blue (the book gives examples by Gainsborough and Canaletto).
  • Around 1803 cobalt blue was invented.
  • In 1828 an artificial version of ultramarine was created in France

Thus the painters of the 19th century had a much wider range of ‘blues’ to choose from than all their predecessors.

The book does the same for the other major colours, naming and explaining the origin of their main types or sources:

Green

  • Terre verte was used as an underpaint for flesh tones in early Italian paintings
  • malachite
  • verdigris, a copper-based pigment was prone to fade to brown and explains why so many Italian landscapes have the same orangey-brown appearance
  • emerald green (a pigment developed in the 19th century containing copper and arsenic)
  • viridian (a chromium oxide)

Red

  • Vermilion, obtained by pulverising cinnabar, liable to fade to brown as has happened with the coat of Gainsborough’s Dr Ralph Schomberg (1770), which should be bright red.

Yellow

  • Lead-tin yellow in the Renaissance
  • from the 17th century lead-based yellow containing antimony known as Naples yellow
  • from the 1820s new tints of yellow became available based on compounds of chromium of which chrome yellow is the most famous
  • cadmium yellow

White

  • Lead white was used from the earliest times. It forms as a crust on metallic lead exposed to acetic acid from sour wine – highly poisonous
  • only in the twentieth century was it replaced by non-toxic whites based on zinc and later, titanium. Unlike all the pigments named so far, lead white keeps its colour extremely well, hence the bright white ruffs and dresses in paintings even when a lot of the brighter colour has gone.

Black 

  • A large range of black pigments was always available, most based on carbon as found in charcoal, soot and so on. Carbon is very stable and so blacks have tended to remain black.

Summary of colours

  1. Over the past 500 years there has been a large amount of evolution and change in the source of the pigments artists use.
  2. Colour in art is a surprisingly technical subject, which quite quickly requires a serious knowledge of inorganic chemistry and, from the 19th century, is linked to the development of industrial processes.
  3. Sic transit gloria mundi or, more precisely, Sic transit gloria artis. The net effect of seeing so many beautiful paintings in which the original colour has faded – sometimes completely – can’t help but make you sad. We live among the wrecks or decay of thousands of once-gloriously coloured artworks. Given the super-duper state of digital technology I wonder if anywhere there exists a project to restore all these faded glories to how they should look!

Disegno versus colore

Vasari, author of The Lives of the Great Artists (155) posed the question, ‘Which was more important, design or colour?’ As a devotee of Michelangelo, the godfather of design, he was on the side of disegno and relates a conversation with Michelangelo about some paintings by Titian (1488-1576) they had seen where Michelangelo praises Titian’s use of colour but laments his poor composition.

The art history stereotype has it that Renaissance Florence was the home of design, while Venice (where Titian lived and worked) put the emphasis on gorgeous colours. This was because Venice was a European centre for the production of dyes and pigments for a wide range of manufacturing purposes, not least glass and textiles.

In late-17th-century France the argument was fought out in the French Academy between Rubénistes (for colour) and Poussinistes (for drawing). Personally, I am more moved by drawing than colour, and a little more so after reading this book and realising just how catastrophically colour can fade and disappear – but, still, there’s no reason not to love both.

Optical theories

Isaac Newton published his Optics in 1704, announcing the discovery that when white light is projected through a prism it breaks down into primary colours, which can then be turned back into white light. Among its far-ranging investigations, the book contained the first schematic arrangement of colours and their ‘opposites’. It wasn’t until well into the 19th century, however, that colour charts began to proliferate (partly because they were required by expanding industrial manufacture, and the evermore competitive design and coloration of products).

And these colour charts bore out Newton’s insight that complementary colours – colours opposite each other on the circle – accentuate and bring each other out.

Colour Circle by Michel Eugène Chevreul (1839)

Colour Circle by Michel Eugène Chevreul (1839)

Colour circles like this systematised knowledge which had been scattered among various artists and critics over the ages. It can be shown that Eugène Delacroix (1798-1863) made systematic use of contrast effects, pairing colour opposites like orange-blue, red-green or yellow-violet, to create stronger visual effects.

On a simplistic level it was the availability of a) new, intense colours, in portable tin tubes, along with b) exciting new theories of colour, which explains the Impressionist movement.

The Impressionists were most interested in trying to capture the changing quality of light, but the corollary of this was a fascination with shadow. Apparently, impressionist painters so regularly (and controversially) paired bright yellow sunlight with the peculiar tinge of violet which is opposite it on the colour charts, that they were accused by contemporary critics of violettomani.

Some examples

The book lists the pigments used to create Titian’s Bacchus and Ariadne. The intense blue sky is made from ultramarine lapis lazuli, as is Ariadne’s drapery and the flowers at the lower right. The blue-green sea is painted with the cheaper azurite. Vermilion gives Ariadne’s sash its red colour. The Bacchante’s orange drapery was painted with a rare arsenic-containing mineral known as realgar.

Titian was aware of the power of colour contrasts long before the 19th century colour wheels, something he demonstrates by placing Ariadne’s red and blue drapery above the primrose yellow cloth by the knocked-over urn at her feet (painted using lead-tin yellow). The green of the tree leaves and the grassy background are created from malachite over-painted with green resinous glazes. An intense red ‘lake’ is used to give Bacchus’s red cloak its depth.

These coloured ‘lakes’ were an important element in Renaissance painting but I had to supplement the book’s information with other sources.

From this I take it that ‘lakes’ were translucent i.e. you could see the colour beneath, and so were used as glazes, meaning you would lay down a wash of one colour and then paint over potentially numerous ‘lakes’ to add highlights, depths or whatever. This build-up of ‘lake’ glazes allowed the layering of multiple variations of colour and so the intensely sensual depiction of the folds on fabrics, the light and shade of curtains and clothes which is so characteristic of Old Master painting.

The book then applies this detailed analysis of colour pigments to a sequence of other Old Masterpieces by Rubens, Velázquez, Rembrandt, Tiepollo, Canaletto, Monet and Seurat.

Conclusion

A Closer Look: Colour makes you appreciate the immense amount of knowledge, science, craft and technique which went into painting each and every one of the National Gallery’s 2,300 artworks (and the depth of scholarship which modern art historians require to analyse and unravel the technical background to each and every painting).

It’s a revelation to read, but also pure joy to be prompted to look, and look again, in closer and closer detail, at so many wonderful paintings.


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Bridget Riley: Learning from Seurat @ the Courtauld Gallery

The English painter Bridget Riley was born in south London in 1931. She’s considered a leading exponent of Op Art, short for Optical Art – art which uses visual illusions to create effects.

This is a one-room exhibition at the Courtauld Gallery focusing on Riley’s early breakthrough encounter with Georges Seurat’s painting Bridge at Courbevoie, a highlight of The Courtauld’s famous collection of Impressionist paintings. Seurat (1859-91) was a pioneer of pointillism, the technique of building up a painting using dabs and spots of colour, as the Bridge painting amply demonstrates.

Riley was fascinated by Seurat’s approach, by the systematic juxtaposition of colours unrelated to each other, and the dynamic visual effects this created. In 1959 she made a close copy of Seurat’s painting to discover and experience the technique ‘from the inside’. Both Seurat’s original and Riley’s copy are in this room, allowing you to compare and contrast.

Bridget Riley Copy after Seurat’s Bridge at Courbevoie (1959) Oil on canvas © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

Bridget Riley Copy after Seurat’s Bridge at Courbevoie (1959) Oil on canvas © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

The exhibition hangs the Seurat and Riley’s homage to it next to each other, with half a dozen of Riley’s paintings from her subsequent career, so investigating the enduring impact it had on her. This is most obvious in a work like Pink landscape, from the very next year. It is still recognisably figurative, a tranquil landscape in the Seurat manner, the changing palette of colour spots used to create the image of a landscape, but also a mood, and a dynamic change of coloration from top to bottom.

Bridget Riley Pink Landscape (1960) Oil on canvas © Bridget Riley 2015. All rights reserved,courtesy Karsten Schubert, London.

Bridget Riley Pink Landscape (1960) Oil on canvas © Bridget Riley 2015. All rights reserved,courtesy Karsten Schubert, London.

But this figurative period didn’t last long. All the other paintings on display here show the dramatic evolution of her style towards total abstraction – not the deeply expressive swirls and folds and washes of Peter Lanyon, working at exactly the same time and featured in the rooms next door.

It is a highly technical abstraction, which takes Seurat’s explorations off into the realm of mathematical patterns. Over her career Riley has explored countless variations on repeating shapes and designs which create powerful optical illusions, static images which exploit the idiosyncrasies and foibles in human perception to appear shimmering and moving.

The earliest moves in this direction came with black and white works like Tremor (1962), which is on display here, entertaining and bright and puzzling in the way such a static image produces such a strangely moving image. It is achieved in part because the static black and white triangles slowly become more sinuous and curvy as the move towards the centre of the canvas before reverting to the more mathematical rigidity at the other side.

A few years later and, along with many other experiments, a work like Late Morning I shows the progression from spots to stripes, and to the austere geometry of parallel vertical bars. The exhibition helps you see how something so formal nonetheless stems from the same enduring interest in placing pure colours next to each other and seeing what happens. Here elongated, narrow strips of several shades of green, red and blue are lined up side by side.

Bridget Riley Late Morning I (1967) Acrylic on linen © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

Bridget Riley Late Morning I (1967) Acrylic on linen © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

The advantage of seeing these paintings in the flesh is that only then can you appreciate the artfulness which has gone into them. For example, Vapour (1970) looks drab, like the Brutalist concrete car parks which characterised the architecture of the period. It’s only when you look closely that you realise each vertical bar is made up of two colours which themselves subtly change shape across the painting. Many of them are predominantly green at the bottom but the green, like a sliver of ice, gets slowly narrower as you go up the surface. Some do this to the left of the grey column, some to the right, and it is this change and the variety of the change, which help explain why what should be a flat static image has a peculiar shimmering, or indeterminate, or slightly disorientating effect.

Bridget Riley Vapour (1970) Acrylic on linen © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

Bridget Riley Vapour (1970) Acrylic on linen © Bridget Riley 2015. All rights reserved, courtesy Karsten Schubert, London.

Later still, in the 1980s, in a work like Ecclesia (1985), you can see how the fascination with what happens when you juxtapose colours is still at work, here taking the hard lines of the radical 1960s and 70s and blurring the edges to create a kind of abstract impressionism.

Riley’s ceaseless experimentation in what has turned out to be such a productive field have been a constant element of abstract art since the 1960s, and this one-room exhibition sheds fascinating light on its roots and on her development over the past 50 years.

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