Orange, 28, " as a colour, 239. " as an archeus, 240. " contrast of, 240. " discordant, 240. " on the Secondary, 239. ORANGE PIGMENTS:-- Anotta, 255. Antimony Orange, 256. Bixine, 256. Burnt Roman Ochre, 255. Burnt Sienna, 243. Burnt Terra di Sienna, 243. Cadmium Orange, 36, 244. Chinese Orange, 246. Chromate of Mercury, 256. Chrome Orange, 248. Damonico, 257. Gamboge Orange, 257. Golden Sulphur of Antimony, 256. Golden Yellow, 256. Laque Minérale, 258. Madder Orange, 258, 353. Mars Orange, 248. Mineral Orange, 248. Mixed Orange, 249. Monicon, 257. Neutral Orange, 253. Orange Chrome, 248. Orange Chromate of Lead, 248. Orange de Mars, 248. Orange Lake, 258. Orange Lead, 258. Orange Ochre, 255. Orange Orpiment, 258. Penley's Neutral Orange, 253. Realgar, 258. Red Orpiment, 258. Rocou, 255. Spanish Ochre, 255. Terra Orellana, 255. Thallium Orange, 259. Uranium Orange, 260. Zinc Orange, 261. Orange Russet, 321. " Vermilion, 157. " " Field's, 158. Order of Colours:-- White, 62-80, 414. Yellow, 81-126. Red, 127-182. Blue, 183-238. Orange, 239-262. Green, 263-293. Purple, 294-309. Citrine, 310-319. Russet, 320-324. Olive, 325-333. Brown, 334-361. Marrone, 362-371. Gray, 372-380. Grey, 381-386. Black, 387-413. Organic pigments with lead chromates, 248. Orient Yellow, 42, 110. Original pigments, 35. " importance of, 240-242. Orpiment Yellow, 111-113. Outremer, 217. Outremer de Guimet, 209. Oxford Ochre, 109. Oxidation of pigments, 38. Oxide, Chrome, 267. " of Chromium, Green, 267. " " Opaque, 267. " " Transparent, 268. Oxychloride of Lead, 73. Oxygenated water, 69. Oyster-shell, white of, 80. P. Paille de Mil, 170. Painting, siliceous, 212. Pale Cadmium, 90. " Chrome, 93. " Vermilion, 154. " washes of a pigment, 91. Palette, disinfectants of the, 359. " motto for the, 156. " setting the, 23. Palette-knife, avoidance of a steel, 39, 50, 90, 103. Palladium, 122. Paper Black, 407. " Smalt and Ultramarine in, 196. " to give a tone to, 253. Paris Blue, 192, 203. Paris, Musée Minéralogique at, 219. " Société d'Encouragement of, 210. Particular colour, predilection for a, 58, 59. Patent Green, 271. " Yellow, 121. Pattison's White, 73. Paul Veronese, 229, 335. Payne's Gray, 378. Peach Black, 407. Pearl White, 78. Peganum Harmala, 171. Penley, Mr. Aaron, 85-87, 158, 268, 270. Penley's Neutral Orange, 253. Perfect pigment, a, 46. Perkin, Mr. W., 162. Permanent Blue, 216. " pigments, 252, 278, 300, 315, 323, 329. " White, 65. Peroxidized pigments, 38. Persian berries, 312. " Green, 271. " lazur, 228. " Red, 148. Perspective, aerial, 22, 23. " linear, 22. " of colours, 22, 23. Persulphomolybdates, 171. Philocles, 7. Phosphine, 162.