Chap. XX. Of the Drill-Boxes. 323 



drier, it v/ill run fatter-, and therefore the Setting- 

 fcrew muft be frequently fcrew'd in to leffen the Seed- 

 paflage. 



The Seed-pafTage, or Place of Preffure, is where 

 the Seed paries down betwixt the Spindle and the 

 Tongue -, and is in that Part where they are neareft 

 together-, for there the Seed is prefs'd harder! by the 

 Force of the Notches, which carry it down : And this 

 Paflage is higher or lower, as the Tongue ftands 

 nearer or farther from the Spindle ; for as it flands 

 wider, it becomes nearer to perpendicular to the Top 

 bf the Moriife, and then the Seed-paffage is higher ; 

 and when it ftands neareft to the Spindle, then the 

 Seed-pafTage is loweft. This appears in Fig, 3. by 

 the Three prick'd Lines a #, a 0, and a p. 



The Spindle, with its Notches, is belt fhewn where 

 it is large, and made of Wood, as that of the Wheat 

 Seed-box ; it is a folid Cylinder that pafTes thro', and 

 fills the great Hole, or hollow Cylinder, of the Seed- 

 box ; it is of various Lengths, according to the 

 Diftance its Wheels go afunder \ it is always in large 

 Boxes the Axis of Two Wheels, and turns round 

 with them, as the Axis of the One Wheel of a 

 Wheelbarrow does with that : Thefe Wheels, by their 

 Circumferences, meafure out the Ground over which 

 they carry the Seed-box, and, by the Notches in their 

 Axis, deliver down the Seed equally, whether they 

 move fwift or flow ; becaufe an equal Number of 

 Notchfuls of Seed will be deliver'd thro* the Sezd- 

 pafTage at each Revolution of the Wheels. 



TheNotches refemble thofe in theHinder-Cylinder 

 of a Cyder- mill, which break the Apples by turn- 

 ing againft the Notches of the .Fore-cylinder, as our 

 Notches turn againft the Tongue-, and bruife the Ap- 

 ples which come betwixt them, as our Notches might 

 fomctimes bruife foft Seeds, if the Tongue flood clofe 

 to the Notches, without any Spring behind it to give 

 Way to their Prefiure, and return the Tongue again 



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