Farm Manure. 



125 



not uncommon to see it placed where it is directly exposed to 

 the continuous action of the elements. 



At the New Jersey Experiment Station four samples of ma- 

 nure were exposed to the weather for varying lengths of time and 

 the losses determined. The results are given in the following 

 table : 



Losses in Manure from Leaching. 



The average loss amounted to more than 50 per cent of the 

 value of the manure during rather short periods. It is very com- 

 mon, if not the rule, to find manure exposed on many farms for 

 longer periods than here shown. The aggregate loss of the plant 

 food of the country by such exposure is appalling. Experiments 

 at the Cornell Experiment Station with manure exposed to the 

 weather for a period of five months (April to September) gave 

 the following data: 



It is necessary to state that the losses will vary with climatic 

 conditions. During heavy rain in warm weather, the losses will 

 be heavier than in dry or cold weather. 



Losses from solid excrement by leaching. Not only is the 

 liquid portion of the excreta of the animal lost by exposure to 



