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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 have been submitted to different ex- 

 periments, and their constitution have been found si- 

 milar. In the urine of the rabbit, in addition to most 

 of the ingredients above mentioned, Vauquelin detect- 

 ed 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, gela- 

 tine, 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 many cases 

 of disease 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 nature 

 of the food and drink used ; and this will account for 

 discordancies 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 animals 

 more rapidly than that of graminivorous animals. In 

 proportion as there is more gelatine and albumen in 

 urine, so in proportion does it putrify more quickly. 



