ANIMIN. 87 



After cooling, it is yellow and transparent. When exposed to 

 a stronger heat, muriate of odorin may be distilled over, leaving 

 metallic gold with some other products of decomposition in the 

 retort. Nitric acid scarcely dissolves it even at a boiling heat. 

 Chloride of platinum gives with muriate of odorin a double 

 salt, which crystallizes, has a yellow colour, and is soluble in four 

 times its weight of water. With odorin alone it forms a subsalt, 

 which is very little soluble, and which precipitates under the form 

 of a powder. Boiling water dissolves a small quantity of it, 

 which is deposited as the solution cools. The action of these 

 two double salts upon reagents is similar to that of the two cor- 

 responding salts of gold. 



CHAPTER III. 



OF ANIMIN. 



IT was stated in the last chapter, that when rectified oil of Dip- 

 pel, saturated with ammonia, was subjected to distillation, the 

 first liquid which came over was pure odorin. As soon as the 

 liquid which distils begins to render water muddy, a new re- 

 ceiver is applied, and the distillation continued, till only one- 

 twentieth of the original quantity remains in the receiver. The 

 liquor thus obtained is a mixture of odorin and animin. If we 

 agitate it with a little water, the odorin will be dissolved, together 

 with a little animin. We may extract the odorin from this solu- 

 tion by supersaturating the liquid with sulphuric acid, evaporat- 

 ing the solution, and distilling the residue with a base. The 

 animin remains under the form of an oil. It has a peculiar 

 smell. It is soluble in twenty times its weight of cold water, 

 but it is much less soluble in hot water. Hence it happens that 

 the cold solution becomes milky when heated, and resumes its 

 limpidity again when allowed to cool. The solution changes 

 reddened litmus-paper to a violet blue colour. It is very solu- 

 ble in alcohol, ether, and oils. 



Its affinity for acids seems nearly the same as that of odorin. 

 Its salts resemble oils like those of odorin ; but they are much 

 less soluble in water. 



1, Sulphate of animin is an oily body very little soluble in 



