URINE. 



345 



Water and indeterminate matters . . 9 10' 7 6 



Urea 31-00 



Hippurate of potash . . . 4*74 



Lactate of potash . . . .11-28 



Lactate of soda . . . .8-81 



Bicarbonate of potash . . . 15-50 



Carbonate of lime .... 10-82 

 Carbonate of magnesia . . . 4-16 



Sulphate of potash . . . 1-18 



Chloride of sodium . . . 0-74 



Silica 1-01 



Phosphates .... absent. 



As several chemists have noticed, amongst the constituents 

 of the urine of the herbivora, a red oil on which the colour and 

 odour of the secretion are dependent, Boussingault endeavoured 

 to isolate it. He distilled upwards of 26 gallons at a single ex- 

 periment, hut did not obtain a trace of the oil, a colourless 

 fluid passing over which evolved the peculiar odour of horses' 

 urine : hence he concluded that the odorous principle is a volatile 

 acid. The only means by which anything like a red oil can be 

 obtained consists in carrying on the distillation to dryness, in 

 which case an oily substance is obtained, analogous to, if not 

 identical with some of the products of decomposition of the 

 alkaline hippurates.] 



Horses are not unfrequently subject to a disease which cor- 

 responds with diabetes insipidus, or hyperdiuresis, in man : it 

 has also been observed in sheep and cattle. 



The following analysis of the urine of cattle was made by 

 Sprengel : 1000 parts contained : 

 Water 



Solid constituents 

 Urea 

 Albumen . 



Mucus 



Benzoic acid 



Lactic acid 



Carbonic acid 



Potash 



Soda 



Silica 



Alumina 



Oxide of manganese 



Lime 



Magnesia 



Chlorine 



Sulphuric acid 



Phosphorus 



926-24 

 73-76 

 40-00 

 0-10 

 1-90 

 0-90 

 5-16 

 2-50 

 6-64 

 5-54 

 0-36 

 0-04 

 0-01 

 0-65 

 0-36 

 2-72 

 4-05 

 0-70 



This analysis requires further confirmation. 



