ANALYSES OF URINE OF DIFFERENT ANIMALS. $ 



These are the points in which the urine of the lion and the 

 royal tiger resembles those of man : but it differs from it, as 

 we have seen, in a sufficient number of points, to consider it , 



as a distinct species. 



It is composed of 



1, Urea, Component 



2, Animal mucus, p 



3, Phosphate of soda, 



4, " ammortia, 



5, Muriate of ammonia, 



6, A trace of phosphate of lime, 



7, Sulphate of potash in large quantity; 



8, An atom of muriate Of soda. 



Urine of the beaver. 



A careful analysis of the urine of the beaver, Several times Urine of thi 

 repeated, has taught me, that it has a great similitude with the 

 urine of the common herbivorous animals. 



In fact, we find in it carbonate of lime held in solution by a its contents, 

 superabundance of carbonic acid ; the benzoic and acetic acids; 

 urea, muriate of soda, and sulphate of potash : but no uric 

 acid, or phosphoric salt. 



It differs from them, however, in containing no muriate of Difference 

 ammonia, but a notable quantity of carbonate and acetate of common" her- 

 magnesia, which are not found, at least in any great quantity, bivorous ani- 

 In the urine of herbivorous animals. ma s * 



The following is the mode in which I detected the carbonate 

 of magnesia. 



After having concentrated a certain quantity of the urine by ^odem 

 a gentle heat, I decanted the thickened liquor, and washed with which the car- 

 distilled water the vessel, on the sides of which the carbonate nesb^vv^df- 

 of lime had settled. I then poured in some sulphuric acid, tected. 

 diluted with water, which produced a frothy effervescence, on 

 account of a mucous matter, which the carbonate of lime car- 

 ries with it. 



Perceiving that the sulphuric acid had acquired a bitter taste 

 in this combination, 1 dried and calcined the mixture, washed 

 it with a little water, and by evaporation obtained a salt, that 

 possessed all the properties of sulphate of magnesia, 



B 2 Desirous 



