132 APPENDIX. 



the result of two crops of Indian corn. In 80 acres 

 of land, improved by turning in the grass, without 

 other manure, the crop averaged 25 bushels an acre. 

 But in 200 acres, where the clover was turned in and 

 the ground also manured, the average was 50 bushels. 

 It is probable, indeed, that the ploughing in of clover, 

 may have a greater effect in many parts of the United 

 States, than in England. For, that large crops of 

 grain have been produced by it, is so strongly attested, 

 that it must not be denied. This may be owing to the 

 superior eiRcacy of the gypsum, wliich, without doubt, 

 acts more powerfully here, than generally in England, 

 and therefore produces a greater quantity of clover. 

 But, as it is certain, that the manure of dung, incor- • 

 porated with putrefied vegetable matter, is more effi- 

 cacious than simple green vegetables ; what I intend, 

 is to exhort our farmers not to trust to the latter 

 alone, nor relax their efforts to collect the former in 

 as great quantities as possible. 



Another important circumstance is to be attended 

 to. We are not to expect, that land will continue to 

 produce luxuriant crops of clover, for ever, even 

 when aided by gypsum. — It would be contrary to the 

 order of nature ; which delights in change. Our 

 second crop of clover, has, for many years, been of 

 little value, though the cause remains unexplained. A 



