378 
Mr. Hatchett’s Observations 
Component Parts of Cow's Urine. 
Rouelle. 
Carbonat of potash 
Sulphat of potash 
Muriat of potash 
Urea 
Benzoic acid. 
From this comparison, we see that Mr. Brande and M. 
Rouelle agree in stating that potash is the only fixed alkali 
present in both cases. 
The urine of the rabbit, according to Vauquelin, is com- 
posed as follows. 
Carbonat of lime 
magnesia 
- — — potash 
Sulphat of potash 
— lime 
Muriat of potash 
Urea 
Gelatine 
Sulphur. 
The same chemist found that the urine of the guinea-pig 
deposited carbonat of lime : that it changed the colour of syrup 
of violets to green ; and that it contained carbonat, and muriat 
of potash ; but not any phosphat, nor uric acid. 
Brande. 
Water - 65 
Phosphat of lime - 3 
Muriat of potash - 1 
— ammonia - J 
Sulphat of potash - 6 
Carbonat of potash - 1 
— — ammonia - J ^ 
Urea - 4 
97 
