Wakeman—Pigments of Flowering Plants. 
893 
Literature on Brazilin. 
Benedict,—Ann., 178, p. 100. 
Bolley, — Schweiz polytech. Zeit., 9, p. 267. 
Buchka, — Ber., 17, p. 685; 18, p. 1140. 
Chevreul, — Ann. Chem. Phys., 66, p. 225. 
Dralle,—Ber., 17, p. 375; 20, p. 3365; 21, p. 3009; 22, p. 1547; 
23, p. 1430; 25, p. 3670; 27, p. 527. 
Herzig, —Montsh. f. Chem., 19, p. 738; 23, p. 241; 25, p. 871. 
Herzig and Poliak, — B. 36, p. 398. 
Kostanecki,—Ber., 35, p. 1674; 36, p. 2202. 
Liebermann and Burz, — B. 9, p. 1885. 
Perkin, —Jr. Chem. Soc. 79, p. 1396; 81, p. 225, 1008, 1057; 
91, p. 1073; 93, p. 489, 1115; 95, p. 385. 
Rein, — Ber., 4, p. 334. 
Schall, — B. 27, p. 529; 35, p. 2306. 
Haemafoxlyn 
Haematoxlyn was discovered by Chevreul, 1 in 1812, in the 
heart of Haematoxylon campechianum. It has also been re¬ 
ported in the bark of Sancta indica , 2 another leguminous plant. 
Haematoxylon, being a hydroxy brazilin, resembles it closely 
in physical and chemical properties. Its history also has been 
almost identical with that of brazilin since the work which 
proved the constitution of one compound proved also that of 
the other. According to Perkin 3 the formula of haematoxylon 
is as given above. Kostanecki and Lampe 4 have suggested 
another formula which differs only in the position of one ben¬ 
zene nucleus and one hydroxy group. The later formula of 
Perkin and his associates is probably to be preferred. 
1 Ann. Chim et Fhys., 66, p. 225 (2) 82, p. 53, 126. 
2 Pharm. Post., 1887, p. 778. 
3 Jr. Chem. Soc., 93, p. 496. 
4 Ber., 35, p. 1674. 
