Initially he applied coarser dots on areas of more even colour, used simultaneous colour contrast, then his blobs grew to become patches of paint resembling the tesserae of mosaics.
Seurat
Seurat intended to use optical mixing of many tiny dots of colour, often contrasting, in Divisionism. How this worked out in his major paintings.
Among the greatest challenges in painting, cast shadows aren’t always correct. Examples from Masolino, Canaletto, Prendergast, Ravilious, CĂ©zanne and Seurat.
Technically challenging for painstaking Divisionist techniques, those who chose to depict reflections used studies to help, and Seurat was generally optically faithful. But the best of all was Théo van Rysselberghe.
Pairs of oil studies and finished paintings by Rubens, GĂ©ricault, Constable, Frith, Seurat, Eakins, Bierstadt and Cross.
The Macchiaioli of Tuscany, James Whistler, Georges Seurat and the Australian Impressionists all like to sketch in oil on cigar boxes.
Modern and mixed media such as wax crayons, pencils, oil pastels, oil sticks and oil bars have become increasingly popular, although many age poorly and most have to be kept under glass.
Derived from the dull yellow-green of chromium oxide, it was widely used by Impressionists, and well into the 20th century. Less toxic, but an environmental hazard.
At the ballet with Degas,Sargent’s Spanish dancer, entertainment in North Africa, an Ionian dance, the Can-Can, Salome and the Dance of the Seven Veils.
The horse in chivalry, carrying Mazeppa or Haidamak insurgent, in the circus, racing riderless through Rome, and in Vernet’s studio.
The Eclectic Light Company 