141 



Oil of Aleurites triloba (kekune, the candle-nut tree). Fixed 

 oil, obtained from the seeds by boiling with water. — Is thin, 

 inodorous, and tasteless. Acts as a mild purgative. 



Oil of Alliuill sativum (garlic) = C6 H5 S. Obtained by 

 distillation with water from the bulbs; also from the leaves of 

 Sisymbrium Alliaria, and mixed with oil of mustard from the 

 herbs and seeds of Thlaspi arvense and other Cruciferse; seems, 

 like oil of mustard, not to exist ready formed (certainly not in 

 cruciferous plants), but to be produced by the action of water. 

 In the raw state it is brownish yellow; of the most intense garlic 

 odour; heavier than water and slowly soluble in it; it is partly 

 decomposed on rectifying and an oil = C^ H5 S passes over as 

 a pale-yellow or colourless liquid of great light-refracting power 

 and of a less nauseous odour; lighter than water; without action 

 on metallic potassium; soluble in cold concentrated sulphuric acid, 

 with purple-red colour, changing to a deep indigo blue with hydro- 

 chloric gas, and precipitating much sulphide of silver from a solution 

 of the nitrate. 



Oil of Alpiuia Galailg'a, A. officinarum (galingal). Obtained 

 by distillation Avitli water from the tubers. — Smells similar to 

 cajeput oil; is lighter than water; dissolves I'eadily in alcohol; of a 

 similar constitution as oil of cajeput. 



Oil of AlldropOIi'Oll (lemon gi-ass). Obtained by aqueous 

 distillation of A. Iwarancusa, A. Calamus, A. citratus, A. 

 Martini, A. Schoenanthus, A. mui'icatus. — Colourless or yellowish; 

 thin; smells penetrating, aromatic, similar to roses, but fainter; 

 has an acrid taste, similar to oil of citron; of neutral reaction; 

 lighter than water; boils at 147° and above. Is a mixture of 

 different oils. [It yields a solid compound with bisulphide of soda 

 solution. — Flueckiger and Hanbury.] 



Oil of Aueilioue. See Anemonin. 



Oil of Alliiue. Obtained by the distillation of the resin. 

 — Limpid ; of a strong but not unpleasant odour, and of hot taste. 



Oil of Alltlieinis liobilis (chamomile). Obtained by aqueous 

 distillation from the flowers. — Blue or greenish; is a mixture 

 of a hydrocarbon C20 Hie with angelic and valerianic acids, 

 which remain in rectifying the oil with potash-ley. The hydro- 

 carbon has a pleasant, lemon-like smell and boils at 175°. 



[According to Demax-^ay, oil of chamomile is a mixture of 

 several compound ethers, principally the angelates and valerates of 

 butyl and amyl.] 



Oil of Apium «TaveoleilS (celery). Obtained by aqueous 

 distillation of the herb and fruits. — Colourless or pale yellow; of 

 penetrating odour; of a sweetish, warming taste, of 0-881 

 density; dissolves readily in alcohol. 



