88 ANIMAL BASES. 



water. When we boil it with water, a portion of the animin is 

 volatilized, and there remains a supersalt very soluble in water 

 and alcohol, and which undergoes no farther change, though the 

 boiling be prolonged. 



2. Benzoate of animin is little soluble in cold water, but more 

 soluble in hot water, by which it is not so easily decomposed as 

 benzoate of odorin. 



3. Muriate of Animin forms double salts with the chlorides of 

 copper, gold, and platinum. The double chloride of animin and 

 mercury has the form of a colourless oil, that of chloride of ani- 

 min and gold the form of a brown oil, while the chloride of ani- 

 min and platinum crystallizes. All these double salts are very 

 little soluble in water.* 



CHAPTER IV. 



OF OLANIN. t 



IT has been already stated, in the preceding chapters, that 

 when rectified Dippel's oil is distilled to one-twentieth part, what 

 passes over is odorin and animin. The twentieth that remains is 

 chiefly olanin ; though it still retains a portion of animin. If we 

 agitate this residue four times successively with five times its 

 weight of water, the animin will be dissolved by that liquid, and 

 the olanin will remain in a state of purity. 



It is an oily liquid, somewhat thick, and resembling a fat oil. 



It has a peculiar but not a disagreeable odour, and reacts very 

 feebly as an alkali upon reddened litmus-paper. When expos- 

 ed to the air it becomes brown, and is gradually converted into 

 fuscin. It is but little soluble in water, but very soluble in al- 

 cohol and ether. 



Its salts are all oily ; and, according to Unverdorben, they re- 

 semble the salts of odorin very closely in their properties. But 

 they have been very imperfectly examined. The following are 

 the facts stated by Unverdorben, and I am not aware that they 

 have been examined by any other chemist. 



* Unverdorben, Poggendorf's Annalen, xi. 67. 



f The name is derived from the first syllables of ofeum animale, adding to them 



the termination in. 



3 



