494 LIQUID PARTS OF ANIMALS. 



Mr Brande, about the year 1806, made some experiments on 

 the urine of the horse, which are stated by Mr Hatchett in a let- 

 ter to Sir Everard Home.* He extracted from that urine the 

 following salts : 



Carbonate of lime. Common salt. 



Carbonate of soda. Hippurate of soda. 



Sulphate of soda. Phosphate of lime. 



These saline contents constituted about one-eighth of the weight 

 of the urine. So that the water, according to this estimate, 

 amounts only to 87*5 per cent. Chevreul examined the urine 

 of the horse in 1808, expressly to ascertain whether it contained 

 phosphate of lime, as stated by Brande. | He could find none ; 

 but detected magnesia and sulphate of potash. 



V. The urine of the ass was examined by Mr Brande in 18064 

 It was transparent and colourless, gave a green colour to the 

 syrup of violets, but no carbonate of lime was deposited when 

 the urine was left at rest. According to Brande, it contained 

 urea, more phosphate of lime than the urine of the horse, car- 

 bonate of soda, sulphate of soda, common salt, and probably chlo- 

 ride of potassium. It contained no ammonia. 



VL The urine of the cow has a strong resemblance to that of 

 the horse. It has nearly the same colour and the same mucila- 

 ginous consistence. It tinges syrup of violets green, and depo- 

 sits a mucous matter. On standing, small crystals are formed 

 on its surfaces. The quantity voided in 24 hours by a cow giving 

 milk, was found by Boussingault to be 18'13 Ibs., and the milk 

 18-7 Ibs. The water drank in 24 hours was 132-282 Ibs. The 

 specific gravity of the urine was 1'035. It contains, according 

 to Rouelle, 



Carbonate of potash. Urea. 



Sulphate of potash. Hippuric acid ? 



Chloride of potassium. 



Mr Brande examined this urine in 1806,|| and found its con- 

 stituents, 



* Phil. Trans. 1806, p. 380. f Ann - de Cnim - lxvii - 303 - 



f Phil. Trans. 1806, p. 380. Ann. de Chim. et de Phys. Ixxi. 113. 



|| Phil. Trans. 1806, p. 378. 



