Page:Indian Medicinal Plants (Text Part 2).djvu/315

N. 0, CIIEN0PODIACK/E. 1005

105° C. It crystallised with one mol. of water and had the composition C₁₀H₁₈O₃+H₂0. When warmed with dilute sulphuric acid it was decomposed, with the formation of thymol. The other new body was an erythritol, melting at 128° to 131°C , after drying in vacno, and having the composition C₁₀H₂₀O₄ + H₂O. When boiled with dilute sulphuric acid, it was decomposed, the products of decomposition including a ketone with a strong odour of menthone, and a crystalline phenolic substance, melting at 80° to 81° C. The formation of more than one glycol by the hydration of the re-arrangement product of ascaridol may be explained by adopting the view of Wallach, whose results indicate that ascaridol is a 1— 4-and not a 3— 6-peroxide. Oxidation of the erythritol yielded an acid, C₁₀H₁₈O₆ , which was regarded as one of the modifications of â-metylisopropyl a â-dihydroxyadipic acid differing in its properties from the two modifications previously described by Wallach. Oxidation of the a-glycol yielded an acid agreeing in its reactions with the structure of 1—4 cineolic acid (J. Ch. I. April 15th, 1913, p. 379.)

Eng. : — The Jerusalem Dak.

Habitat :— Temperate Himalaya, from Kashmir to Sikkim ; Peshawar and Bombay. A weed in fields.

Very aromatic, erect, glandular, pubescent herbs. Stem grooved and ribbed, 6-18ft., stout, slender. Branches spreading and recurved. Leaves l-3in., very obtuse ; lower leaves petioled, ovate-oblong, deeply sinuate, or lobulate, upper oblanceolate, more entire. Petals variable. Cymes spreading and recurved, short, branched. Flowers solitary or clustered, minute. Embryo incompletely annular.

Use: — It has been used in France with advantage in catarrh and humoral asthma. The officinal preparation is an oil (U. S. Dispensatory.)

Used as a substitute for C. anthelmenticum, and to possess the same properties as those of C. ambrosioides. (Watt, 11. 267.)

Eng. '—The sweet pig-weed ; Mexican Tea.

Vern.: — Chandan batavá ; Vasuki (Bomb.).

Habitat : — Bengal, Sylhet and the Deccan.

A strongly aromatic glandular rank herb, erect, puberulous. Branches numerous, strict. Leaves shortly petioled, oblong or lanceolate-obtuse, sinuate toothed, upper entire, clusters in