N. 0, CIIEN0PODIACK/E. 1005 



105 e C. It crystallised with one mol. of water and had the composition C 10 

 H 13 3 -fH 2 0. 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 vacuo, and having the composition 

 C\o H 20 4 + H 2 0. When boiled with dilute sulphuric acid, it was decom- 

 posed, the products of decomposition including a ketone with a strong odour 

 of menthone, and a crystalline phenolic substance, melting at 80° to 81 C 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. Oxida- 

 tion of the erythritol yielded an acid, O 10 H 18 6 , which was regarded as one 

 of the modifications of a ^-metylisopropyl a <f-dihydroxyadipic acid differing 

 in its properties from the two modifications previously described by Wallach. 

 Oxidation of the u-glycol yielded an acid agreeing in its reactions with the 

 structure of 1—4 cineolic acid (J. Ch. I. April 15th, 1913, p. 379.) 



1042. G. Gotrys, Linn., h.f.b.i., v. 4. 



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 G. antlielmentieum, and to possess 

 the same properties as those of C. ambrosioides. (Watt, 11. 267.) 



1043. G. Ambrosioides, Linn., h.f.b.i., v. 4. 

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



Vera. '• — Chandan batava ; 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 

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