[ i*4 ] 



and rolled ; and if good eftecls are obferved from 

 that alfo, that it mould even be repeated a third 

 time. I recommend it upon the following prin- 

 ciple: That Mr. Miller's experiment demon- 

 lira tes how difficult it might be to eradicate corn 

 by harrowing; mould nine plants be deftroyed by 

 the harrow, it is probable, that the tenth will do 

 more than fupply the deficiency. 



I come now to conclude, with the following 

 maxims : 



Firft; That this difcovery of Mr. Miller's is 

 highly meritorious, and deferves the attention of 

 your Society, and of every Society for the im- 

 provement of Agriculture, as well as of every 

 Farmer in the world. 



idly, That every farmer who pracliifes harrow- 

 ing and rolling, mould pay particular attention, 

 in the moft minute manner, to the effecl: it has 

 on the corn; and to obferve particularly, whether 

 in his judgment the benefit arifes from the pul- 

 verizing, or the tillering, or from both: — that 

 he mould afcertain by experiments on certain 

 portions of his lands, accurately meafured, the dif- 

 ference in the produce of what is not harrowed and 

 rolled, and what is done once, and (i£ he choofes 



