Chap. I. B Y M. R O U S S E L. 129 



prepared in a hurry, and badly plowed i and ev^en fuppofe them to 

 be no better managed in the following years, and the whole extent 

 ■of the 24 acres, to be only of the fame quality as the 4 acres and 

 a half with which it was intended to be compared -, the produce 

 of both, in three years, will be as follows ; 



The 19 acres produced 11 592 burtiels of wheat, which was pre- 

 ferred to any other for feed, not only becaufe it was finer, but like- 

 wife becaufe it was quite free from all feeds of wheat. This is after 

 the rate of 610 pounds for every acre. 



From this, we are to dedud: the feed, which is, for each acre, 

 24 pounds. 



The neat produce of each acre, will then be 586 pounds of 

 wheat, free from aid feeds of weeds. 



Suppofing the crops to be no greater in the following years, tho' 

 what we fliall fay hereafter will Ihew that they certainly w^ill, each 

 acre will have produced at the end of three years, 1758 pounds of 

 wheat. 



The other piece of ground, which was cultivated in the old way, 

 in order to make the comparifon, produced 1260 pounds an acre, 

 from which we are to dedu6t 154 pounds, for the feed. 



The remaining neat produce is 1 106 pounds. 



The fecond year's produce of this fime acre, fowed with fpring- 

 corn, can be reckoned at only half the value of the firft year's 

 crop of wheat ; and the third year produces nothing, being the 

 year of fallow. 



Thus the total neat produce of the acre cultivated in the com- 

 inon way, will be, at the end of three years, only 1659 pounds; 

 whilft that in the new way, will be 1758 pounds. 



M.RoussEL gives the folloiving Account of his Experiments in 1756. 



*' JN Oftober 1755, fays he, I chofe in the middle of a fallow 

 -*■ field which had been well plowed, and was not expofed to 

 any of the accidents I met with laft year,* a piece of ground, 

 which, to make a fair comparifon between the new method and 

 the old, I divided into two equal parts. One of thefe fpots was 

 fet apart for the new husbandry ; and the other, exadlly of the 



S fame 



* This change of ground was far from being an advantage to the new hufbandry, 

 as M. Duhamel obferves. 



