Chevreul, M., 173, 191, 205, 364. Chiaroscuro, 15. Chica d'Andiguez, 160. " Marrone, 367. " Red, 159. China, Mandarins of, 219. " White, 80. Chinese Ink, 395. " Lake, 137. " Orange, 246. " Rouge, 174. " Vermilion, 156. " White, 75. " Yellow, 111. Chinoline, 162. Chocolate Lead, 368. Chromate of Mercury, 256. Chromates of lead, organic pigments with, 248, 280. Chrome Arseniate, 284. " Browns, 355. " Green, True, 267. " Greens, 279-281. " Ochre, 267. Chrome Orange, 248. " Oxide, 267. " Oxides, 266-271. " Red, 151. " Scarlet, 151. " Yellows, 93-95. " " adulteration of, 94. Chromium, Green Oxide of, 267. " Opaque Oxide of, 267. " Oxide of, 267. " Transparent Oxide of, 268. Church, Professor, 165. Cicero, 296. Cinnabar, 153. " Green, 280. Citrine, 28. " analysis of, 329. " as a colour, 310. " contrast of, 311. " on the Tertiary, 310. CITRINE PIGMENTS:-- Brown Pink, 312. Brown Stil de Grain, 312. Brun de Mars, 313. Cassia Fistula, 316. Citrine Brown, 317. Citrine Lake, 312. Mars Brown, 313. Mixed Citrine, 314. Quercitron Lake, 312. Raw Umber, 315. Umber, 315. Citron Yellow, 95. Classes of Colours, on, 27-30. CLASSIFIED PIGMENTS:-- Black, 409. Blue, 236. Brown, 361. Citrine, 319. Gray, 380. Green, 291. Grey, 386. Marrone, 371. Olive, 333. Orange, 261. Purple, 308. Red, 181. Russet, 324. White, 80. Yellow, 125. Claude, 345. Cleanliness in painting, 53. Coal-Tar Colours, 160-164, 247. " cakes of, 163. " in oil, 247. Cobalt Blue, 192. chalkiness in, 195. manufacture of, 192. " Blues, 189-199. " Green, 285. " Marrone, 368. " Prussian Blue, 227. " " Green, 282. " Purples, 305. " Ultramarine, 192. Coccus (Abies nigra), 168. " cacti, 131. " ficus, 138. " ilicis, 153, 167. Cochineal, 132. " adulteration of, 132. " Dr. Warren de la Rue on, 132. " lake, with Vermilion, 136. " Lakes, 131-137. Coëlin, 190. Coeruleum, 190, 198, 217, 229. Coffee Black, 405. " Brown, 405. Cohesion and colour, 197, 208. " durability, 197, 208. Cologne Earth, 344. " Yellow, 94. Colour and neutrality, 375. " latent, 58. " of extreme light objects, 21. " of shadow, 21. " on the Relations and Harmony of, 13. Coloured rays, mixture of, 384. Colouring, ancient, 3-7. " false, 20. " importance of, 10-12. " on, 3. " vicious, 11-21.