[250] 



to the lever C. The lower boxes B, ftiould not be fuf- 

 fered to become empty before they are fupplied with feed, 

 but fhould be kept nearly full, or within an inch or fo of 

 the edo;e of the box. 



't 



If chalk lines are made acrofs the backs of the coulters, 

 at fuch a diftance from the ends as the feed fhould be de- 

 pofited in the ground, (viz. about two inches for wheat, 

 and from two to three for fpring corn) the perfon that 

 attends the machine will be better able to afcertain the 

 depth the feed fhould be depofited in the drills, by obferv- 

 ing, as the machine goes along, whether the chalk lines 

 are above or below the furface of the landj if above, a 

 proper weight muft be applied to the lever L, which will 

 force the coulters into the ground; if below, the lever L 

 and weight muft be reverfed, which will prevent their 

 finking too deep. 



Wheat that is brined and limed fhould be made dry by 

 fprcading it thin upon a floor, and the loofe particles of 

 lime fifted out, before it is fown by the machine, other- 

 wife the grain, by clogging together, will not be fo re- 

 gularly diftributed in the drills. Good old feed-wheat is 

 much better than new, and is not fo fubjedt to fmut; this 

 is proved by experience. 



Upon wet foils or ftrong clays, wheat fhould not be de- 

 pofited more than two inches deep, on any account what- 

 ever ; nor lefs than two inches deep on dry foils. From 

 two to three inches is a medium depth for all fpring corn. 

 But the exa6t depth at which grain fhould be depofited in 



diiFerent 



