CHEMICAL COMPOSITION OF MANURES 



83 



Composition of fresh excrement of farm quadrupeds. 

 One thousand pounds of fresh dung contain : — 



One thousand pounds of fresh urine contain : 



The potash of both the dung and the urine is included with Hme, 

 magnesia, and other elements, to make up the so-called " alkalies." 



Composition of drainage liquors. 

 One thousand pounds contain : — 



The figures presented in this last table are based on analyses made 

 at the Hatch Experiment Station, Amherst, Mass. It will be noticed 

 that these liquors are richer both in nitrogen and in potash than the 

 average of farm manures. 



