[ 4" 3 



The common length is about eight feet; and if ciglu inch 

 diftances, for inAance, fhould be thought moft proper, then 

 the roller would have twelve ribs. The common diameter 

 IS about twelve inches. It is almoft unncceflary to remark, 

 that the foil on which this implement can be ufed to greateft 

 advantage muft be a light one, the furface even, and well 

 pulverized. The feed, after the roller has pafTcd and pre- 

 pared the drills, is to be fown broad-caft. It falls into the 

 drills, almod wholly by the fowing; but that defign is com- 

 pleted by a bufli harrow, which is ufed acrofs the drills to 

 finifli the bufmefs. After this the corn comes up in regular 

 rows, as though drilled by a machine. Two horfes may be 

 deemed fufficient, on fome foils. 



Article XXXVII. 



On the Turnip-rooted Cabbage^ Roota Baga^ 

 and Potatoes. 



[By the Same, to the Sccretar)'.] 



Hetbel, Jan, 22, 1790. 



Sir, 



' I ^HE apprehenfion of increafing your trouble, 

 by a frivolous and ufelcfs corrcfpondencc, has 

 of late withheld me from writing to youj and 

 though I have now ventured to do it, I am not 

 without a fear, that the fmall morfels of ^experi- 

 E e 3 mental 



