13 



the latter off from the tincture (after adding a few drops of 

 hydrochloric acid, in order to prevent the red matter from turning 

 green), evaporate on the water-bath to a thickish mass, shake with 

 ether, which assumes a dark-red colour, and with water; remove 

 the aqueous stratum and repeat the operation with fresh water 

 until the ethereous stratum has so far diminished as to become of 

 a thick fluidity, and evaporate the ether. Dark red-brown, 

 resinous, brittle mass of neutral reaction, fuses below 60°, vola- 

 tilises by careful heating in violet-red vapours similar to those of 

 iodine and condenses in voluminous flocks under partial decompo- 

 sition. Not soluble in water, but readily in alcohol and better 

 still in ether and oils with red, in concentrated sulphuric acid 

 with amethyst-colour, in alkalies with blue colour, and precipitable 

 in the latter solution by acids in brown-red flocks. The alcoholic 

 solution decomposes and becomes green with ammonia. 



Andirin. Bitter substance of the wood of Andira anthel- 

 mintica, yellow-brown, soluble in watei', alcohol and ether; only 

 known in the impure state. 



Anemonic Acid = C30 Hu O14, See Anemonin. White, 

 amorphous powder, without taste, of acid reaction, insoluble in 

 water, alcohol, ether^ oils and diluted acids, combines with alkalies 

 in yellow colour. 



AneniOllin = C30 H12 O12. In the herb of Anemone nemo- 

 rosa, pratensis, Pulsatilla, Raniincvilus bulbosus, Flammula, 

 sceleratus*. The aqueous distillate of the above herbs, when kept 

 for some time in contact with the volatile oil, obtained by the 

 same operation, separates crystals of Anemonin and a white 

 pulverulent substance (Anemonic acid). Of the two substances 

 only Anemonin dissolves in alcohol, therefore it can be easily 

 separated. It appears in colourless, glossy prisms of the klino- 

 rhombic form, without odotir, of highly poignant and burning 

 taste when fused, of neutral reaction; softens at 150° and decom- 

 poses afterwai'ds (formerly believed to be volatile), dissolves very 

 little in cold water, dissolves in hot water and separates in crystals 

 on cooling; dissolves little in cold, readily in boiling alcohol; not 

 in cold, little in boiling ether; in chloroform; in fixed and volatile 

 oils ; in aqueous alkalies under decomposition. 



Anethol = C20 H12 O 2 . Constitutes almost entirely the 

 volatile oils of Foeniculum officinale, of Artemisia Dracunculus, 

 of Pimpinella Anisum and of Illicium anisatum. It occurs in 

 the solid and in the liquid state. The former is obtained by 

 pressing the oil of the first, third or fourth of the above plants at 

 0° and by re-crystallising; the liquid is obtained from the oils of 

 the first or second herb by distilling, collecting the distillate of 



* And numerous other plants of the order.— F. v. M. 



