374 
Mr. Hatchett’s Observations 
W ater 
Phosphat of lime 
Muriat of ammonia 
Sulphat of potash 
Urat of potash 
Carbonat of potash 
Muriat of potash 
Urea 
Mr. Brande next proceeds to give an account of his exa- 
mination of cow’s urine. 
“ As I had sent me a large supply of cow's urine, I have 
been enabled to vary my experiments on it, in such a manner, 
that I hope to have drawn tolerably accurate conclusions with 
respect to its composition. 
“ The analysis was conducted nearly as follows : 
“ 1. I put four ounces into a glass retort, to which a proper 
apparatus was adapted for collecting its gaseous as well as 
fluid parts. The distillation was performed in a sand-bath. 
I obtained carbonic acid and water, shewing some signs 
of ammonia ; possessing however a peculiar flavour. There 
remained in the retort a brown mass, which was chiefly com- 
posed of muriat of potash, and of ammonia ; sulphat of pot- 
ash, phosphat of lime, and urea. 
“ The carbonic acid must in part have been produced from 
a decomposition of a portion of urea : and hence the brown 
colour of the residuum. 
s ‘ 2. Four ounces of the urine were evaporated to half the 
quantity. Muriatic acid was added, and a precipitate was 
