The organic constituents of plants and vegetable substances and their chemical analysis / by G.C. Wittstein ; authorised translation from the German original, enlarged with numerous additions, by Baron Ferd. von Mueller.
- Date:
- 1878
Licence: Public Domain Mark
Credit: The organic constituents of plants and vegetable substances and their chemical analysis / by G.C. Wittstein ; authorised translation from the German original, enlarged with numerous additions, by Baron Ferd. von Mueller. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![case tlie resin was transparent, brittle, dark-brown, and soluble in hot alcohol only with difficulty, but easily soluble in ether and chloroform.] Buses, Organic = Alkaloids. Basilicum Stearopten = C20 H22 Os. Obtained by the distillation of Ocimum Basilicum with water. The oil floating on the water solidifies almost entirely to a white, crystalline mass. When recrystallised in alcohol it appears in quadrangular prisms of a faint odour of the oil; when recrystallised in water, in tetrahedrons almost devoid of taste; it is neutral, dissolves little in cold, readily in hot water or alcohol, in six parts of ether, also in acids and alkalies. Isomeric or identical with the hydrate of oil of turpentine. Bassia Fat, from the seeds of Bassia butyracea, B. longifolia and B. latifolia. Yellowish, slowly decolourised by light, of the consistence of butter and of 0-958 spec, grav., fuses at 27° to 29°, dissolves little in alcohol, readily in ether; contains olein, myristin, palmitin and stearin. (The last-mentioned was errone- ously distinguished as Bassic acid). Bassorill = C12 Hio Oio. Ingredient of Bassora-gum, Traga- canth and similar gummous exudations of plants (cherry-gum, anacardia gum), insoluble in water and swelling in it; can only likely be object of phytochemical analyses in exudations of the above and similar kinds. When such an exudation is treated ■with cold water, it swells up considerably and dissolves partially; by straining and repeatedly treating with fresh water, the soluble part is removed, but the remaining portion contains, like the vegetable mucus, always more or less lime-compounds which can only be removed by repeatedly treating with water containing hydrochloric acid. When dry, the Bassorin is yellowish-white, solid, brittle, transparent, without taste, swells in cold water to a transparent jelly, without dissolving, but dissolves by continued boiling to a gummous liquid, yields with diluted sulphuric acid gum and sugar, with nitric acid, mucic and a little oxalic acids. Bay Oil, obtained by distilling the berries of Lauras nobilis with water. Greenish-yellow, of a tliickish consistence, of the odour of bay-berries and turpentine, of faintly acid reaction, and 0-932 density. It consists of two polymeric hydrocarbons, C2o Hi6, boiling at 164° and of 0-908 density, and C30 H24, boiling at 250° and of 0-925 density, and of lauric acid—C24 H24 O4. Biiy Oil from Olliaiia. Obtained by incisions, from the stem of an unknown tree. When rectified and desiccated, colourless, of the smell of oil of turpentine and lemons, of aromatic pungent taste, of 0-864 density, boils at 150° to 163°.](https://iiif.wellcomecollection.org/image/b21957927_0047.jp2/full/800%2C/0/default.jpg)
