508 MASSACHUSETTS AGRICULTURE. 



sands fertile, which no manure alone can; remember that 

 drainage will put your peat and clay into a condition to yield 

 the largest crops with but little manure, which, without drain- 

 age, will be never benefited by all the manure you can apply ; 

 and, finally, remember that no manure returns more than five 

 per cent, of its value in the crop, and that, therefore, no matter 

 how wet or dry your land may be, you cannot increase the 

 relative yield due manure above five per cent., and that the 

 surest way to get the most value from your manure is to so 

 highly improve your land as to be able to get maximum crops 

 with as nearly as possible minimum dressings of manure. 



