159 



Oil of Syring'a VUlg'aris (lilac). Extracted from tlie flowers 

 by ether, — Amber-yellow, smells sitoilarto the flowers; deposits on 

 keeping a hard, wax-like substance. 



Oil of Tjlliacetuill VUl«'ill'e (tansy). Distilled with water from 

 the herb and flowers. — Yellow, thin, of the specific odour of the 

 plant, lighter than water. 



Oil of Teucrimn Maruiu. See Marum-Camphor. 



Oil of Tliea CbineilSis (tea). Obtained by distilling Chinese 

 tea with water, shaking the turbid distillate with ether, pouring 

 the ethereous solution ofi", and evaporating. — Lemon-yellow, 

 lighter than water, solidifies on keeping, is of a strongly narcotic 

 tea-like odour and a similar taste, but without any astringency. 



Oil of Tlieobroina. See Cacao-fat. 



Oil of Tliuya OCCilleiltaliS. Distilled from the green parts by 

 -vv^ater. — Colourless to greenish-yellow, of 0'925 density and cam- 

 phoraceous smell and taste, boils at 190°, and for the greater part 

 at 193°- 19 7°; dissolves readily in alcohol. Is a mixture of at 

 least two oxygenised oils. 



Oil of Tliyiims SerpilllUU. Obtained by distillation with 

 water. — Gold-yellow; of a pleasant odour of lemon and thyme, and 

 of an aromatic, somewhat bitter taste ; of 0"89-0'91 density. 



Oil of Tilia ElU'Opiiea. Distilled by water from the flowers. — 

 Colourless or yellowish, lighter than water, smells strongly and 

 pleasantly of the fresh flowers, has a sweetish taste ; dissolves 

 readily in alcohol. 



Oil of Tl"01)aC0tum Illdjll.S. Obtained by distilling the fruits 

 with water. — Yellow, heavier than water ; of a peculiar, strongly 

 aromatic odour and acrid, burning taste; inflames the skin even 

 more than mustard-oil; boils at 120°-130°; contains sulphiu-, 

 [Contains, according to A. W. Hofmann, as chief constituent on 

 oU=:Ci6 H7 N, of aromatic odour, colourless, of 1-0146 density 

 at 18°; boils at 226°. The same compound also occurs in the 

 ethereal oil of Lepidium sativum, obtained from the herb, the 

 aqueous distillate of which requii*es agitating with benzol, in order 

 to deliver up the oil.] 



Oil of Turpeiitiiie. See Oil of Pinus. 



Oil of Valeriuiia officinalis. Distilled from the root by water. 

 — Thin, yellowish, neutral; smells of the dried root; is of 0'90-0'96 

 •density; dissolves readily in alcohol. It is a mixture of valerol 

 (70%)=rCi2 Hio O2, valeren or box'neen = C2o Hie, borneol = 

 ^20 His O 2 , and valerianic acid. 



Oil of Yitis villifera. Obtained by pi-essing the seeds (raisin- 

 stones). — Colourless or yellowish, almost devoid of smell ; has a 



