496 LIQUID PARTS OF ANIMALS. 



Albumen. A little sulphate of soda. 



Carbonate of lime. Much sulphate of potash. 



Carbonate of magnesia. A little carbonate of potash. 

 Silica. Hippuric acid ? 



Trace of sulphate of lime. Urea. 



Trace of iron. A brown oil, having a strong 



Carbonate of ammonia. smell. 



Chloride of potassium. 



VIII. The urine of the sow was subjected to chemical analy- 

 sis in 1819, by M. Lassaigne.* It is transparent, slightly yellow, 

 without smell, and having a disagreeable, but not saline, taste. 

 The following were the substances extracted from this urine by 

 M. Lassaigne: 



Urea. Sulphate of potash. 



Sal-ammoniac. A little sulphate of soda. 



Chloride of potassium. Trace of sulphate and carbonate 

 Common salt. of lime. 



IX. The urine of the rabbit was examined by Vauquelin.f 

 When exposed to the air it becomes milky, and deposits carbo- 

 nate of lime. It gives a green colour to syrup of violets and ef- 

 fervesces with acids. Vauquelin detected in it the following sub- 

 stances : 



Carbonate of lime. Chloride of potassium. 



Carbonate of magnesia. Urea. 



Carbonate of potash. Mucus. 



Sulphate of potash. Sulphur. 



Sulphate of lime. 



X. The urine of the guinea pig was examined also by Vau- 

 quelin ; though the quantity subjected to analysis was too small 

 to enable him to make a detailed examination. It became tur- 

 bid, and deposited carbonate of lime on cooling, gave a green co- 

 lour to syrup of violets, and was found to contain carbonate of 

 potash and chloride of potassium ; but neither phosphate nor 

 uric acid could be detected in it.} 



XI. The urine of the rhinoceros was examined by M. Vogel 

 in 1817. It was muddy, and let fall on cooling a great quan- 

 tity of an ochre-yellow matter. Twenty pounds of the urine 



* Jour, de Pharmacie, viii. 174. 



f Fourcroy's General System of Chemical Knowledge, x. 265. 



f Ibid. p. 267. Schweigger's Jour. xix. 156. 



