NIGHT SOIL— HUMAN URINE. 



871 



parts ■water. Pigs' urine contains 56 parts dry 

 organic matter, 18 parts inorganic matter, and 926 

 parts water (Sprengel). The inorganic matters con- 

 sist chiefly of alkaline salts. 



995. Human excrement (according to Berzelius) 

 contains 227 parts dry organic matter, 100 parts 

 inorganic matter, and 733 parts water. Its consti- 

 tuents are — 



1000 



996. The inorganic matter contained in 1000 parts 

 consequently weighs 150, and contains 100 parts 

 earthy phosphates, 12 parts carbonate of soda, 8 

 parts sulphate and phosphate of soda, and sulphate 

 of potash. 



997. Human urine (according to Berzelius) con- 

 sists of 49 parts dry organic matter, 7 parts salts of 

 ammonia, 11 parts inorganic matter, and 933 parts 

 water. Its composition in detail is — 



