( 21 ) 



In favour of the Southdowii were 



2| lbs. of fat, 4fd. per lb. o o lO 

 1 1 lbs. of flcin and wool 005 



" o 



In -favour of the Norfolk were 



lib. of mutton - - - o o 5 

 and firft coft 066 



o 



6 II 



Total difference in favour of the Norfolk fheep 058 



It is to be obferved that neither of thefe ewes had had any- 

 young, but at the time of making the experiment, the 

 Norfolk was more than half gone with lamb, and the 

 Southdown had but jufl taken the ram. 



The author of this experiment has conftrufted and ufes 

 a draining wheel of call iron, that weighs about 4cwt. it is 

 four feet in diameter; the cutting edge, or extreme circum- 

 ference of the wheel is half an inch thick, which increafing 

 in thicknefs towards the nave or centre, will, at fifteen 

 inches deep, fcore out or cut a drain half an inch wide at 

 the bottom, and four inches wide at the top. This wheel is 

 fo placed in a frame, that it may be loaded at pleafure, and 

 be made to operate to a greater or lefs depth, according to 

 the refiftance made by the ground ; which thus fcored out in 

 the winter, the wheel-tradls are either then filled with ftraw 

 ropes, and lightly covered over ; or left to crack wider and 

 deeper, during the enfuing fummer. The fifTures are then 

 filled with twifted ftraw or bulhes, and covered lightly with 

 fome of the mod porous earth that may be mod conveniently 

 at hand ; and thus upon the grafs or ley land, are hollow 

 drains formed at little or no expence, and which upon 

 trial have been found to anfwer extremely well. 



