De la loi du contraste simultané des couleurs, et de l'assortiment des objets colorés, considéré d'après cette loi Pitois-Levrault et Cie | Paris 1839 | text: 13 x 21 cm / plate volume: 24 x 28.5 cm | contemporary calf
The first edition, complete with the two folding tables in the text volume. The second volume has
40 plates, making up a hundred or so illustrations, partly coloured and all signed by Chevreul. These show examples of colour contrasts through lithographed colour spots on light or dark backgrounds. At the end of this volume, there is also a text by Condorcet printed on 9 different-coloured leaves.
Contemporary half light