150 



MANURE. 



about 8J per cent. Human excrement contams, per 100 

 parts : 



Geine, .....*... 23. 

 Salts, 1.2 



Carbonate of ammonia, 15.32 



A later analysis of human excrement has been made by 

 Fleitmann in Rose's laboratory. The feces of a young man, 

 in health, for four days, dried at 212° F., weighed 2607 

 grains, or nearly six ounces. In 100 parts of the salts or 

 inorganic constituents were, 



The sand was supposed to have been, in part, swallowed 

 during the time while the young man was in exercise in the 

 fields near Berlin. 



The potash existed in combination partly with an organic 

 substance in the feces, which acted as an acid. The quantity 

 of phosphate of magnesia is remarkable, and all the phos- 

 phates are composed of three of base to one of acid. 



The urine was separately collected. Its inorganic salts 

 exceeded daily more than six and one-third times those of 



