[2371] From information communicated by Mr. Binnendyk, of the Botanical Garden, Buitenzorg, Java.
[2372] The following is a striking experiment, showing some of these changes of colour:—Place a little crushed turmeric or the powder on blotting paper, and moisten it repeatedly with chloroform, allowing the latter to evaporate. There will thus be formed on the paper a yellow stain, which on addition of a slightly acidulated solution of borax and drying assumes a purple hue. If the paper is now sprinkled with dilute ammonia it will acquire a transient blue. This reaction enables one to recognize the presence of turmeric in powdered rhubarb or mustard.
[2373] Returns quoted at p. 571, note 2.
[2374] Statement of the Trade and Navigation of Bombay for 1871-72, pt. ii. 95.
[2375] Monandrous Plants of the order Scitamineæ, Liverpool, 1828, especially Zingiber Cossumunar.
[2376] Galanga appears to be derived from the Arabic name Khulanjan, which in turn comes from the Chinese Kau-liang Kiang, signifying, as Dr. F. Porter Smith has informed us, Kau-liang ginger. Kau-liang is the ancient name of a district in the province of Kwangtung.
[2377] Journ. of Linnean Society, Botany, xiii. (1871) 1; also Trimen’s Journ. of Bot., ii. (1873) 175; Bentley and Trimen’s Med. Plants, part 31 (1878).—Dr. Thwaites of Ceylon, who has the plant in cultivation, has been good enough to send us a fine coloured drawing of it in flower.
[2378] Work [quoted in the Appendix]—tome v. 294.
[2379] Géographie, i. (1836) 51.
[2380] De Rerum gradibus, Argentorati, 1531. 162.