URINE. 369 



sists of 291 parts dry organic matter, 30 parts inor- 

 ganic matter, and 679 parts water. The earthy 

 matters consist of about half silica, a quarter carbon- 

 ate and phosphate of lime, and the remainder alka- 

 line salts. The urine of the sheep consists of 28 

 parts organic matter, 12 parts inorganic matter, 

 and 960 parts water, containing a portion of am- 

 monia ; because even in fresh urine a portion of the 

 azotized matter which it contains, is generally begin- 

 ning to decompose and form ammonia. 



991. Fresh cow dung (according to Boussingault) 

 consists of 124 parts dry organic matter, 17 parts 

 inorganic matter, and 859 parts water. The inor- 

 ganic matter contains two-thirds of silica, nearly 

 one-third of earthy phosphates, and a small quantity 

 of alkaline salts. Cows' urine consists of 53 parts 

 dry organic matter, 21 parts inorganic matter, and 

 926 parts water (Sprengel). 



992. The composition of cows' urine, and the 

 nature of the changes which it undergoes when suf- 

 fered to putrefy, either alone or diluted with water, 

 are shown in the following table (Sprengel) : — 



Fresh. Putrefied. Putrefied. 



