FARM MANURES 



223 



is an equal quantity of solid excrement, but in the case of 

 swine there is little difference between the solid and liquid 

 excreta in this respect. 



TOTAL 



NITROGEN 



0.5% 



PHOSPHORIC 

 ACID 

 0.5% 



POTASH 

 0.6% 



Fig. 33. — A farm manure containing 0.5 percent nitrogen, 0.3 percent 

 phosphoric acid and 0.6 percent potash will, on the average, have these 

 constituents divided between the solid and liquid parts of the manure in 

 the proportions shown above. 



280. Farm manure an unbalanced fertilizer. — A mix- 

 ture of horse and cow manure, with an ordinary quantity 

 of straw litter will have a composition somewhat as follows : 



