266 
Of carbonate of soda 9 
— benzoate of soda - - 24 
— muriate of potassa - - - 9 
— urea - *. - 7 
— water and mucilage - 940 
In addition to these substances, Mr. Brande 
found in it phosphate of lime. 
The urine of the ass, the camel, the rabbit, and 
domestic fowls has been submitted to different ex- 
periments, and the constitution has been found 
similar. In the urine of the rabbit, in addition to 
most of the ingredients above mentioned, Vauquelin 
detected gelatine ; and the same chemist discovered 
uric acid in the urine of domestic fowls. 
Human urine contains a greater variety of con- 
stituents than any other species examined. 
Urea, uric acid, and another acid similar to it in 
nature called rosacic acid, acetic acid, albumen, 
gelatine, a resinous matter, and various salts, are 
found in it. 
The human urine differs in composition accord- 
ing to the state of the body, and the nature of the 
food and drink made use of. In may cases of dis- 
ease there is a much larger quantity of gelatine and 
albumen than usual in the urine ; and in diabetes 
it contains sugar. 
It is probable that the urine of the same animal 
must likewise differ according to the different na- 
ture of the food and drink used ; and this will 
account for discordances in some of the analyses 
that have been published on the subject. 
Urine is very liable to change and to undergo 
the putrefactive process ; and that of carnivorous 
