618 SOILS : PBOPJSBTIES AND MANAGEMENT 



vised. Hauling immediately to the field is a wise pro- 

 cedure. Yet even with the best of care a loss of from 30 

 to 50 per cent is often incurred. A permanent system of 

 agriculture evidently cannot be established by simply 

 returning all the manure possible to the land. Neverthe- 

 less, it is certainly worth the while of any farmer to use 

 at least some care in the handling of this product. Even 

 reasonable attention would save for the soils of this coun- 

 try thousands of dollars' worth of manurial fertility 

 which is now carried away in the streams and rivers. 



