374 °f the Wheat-Brill Chap. XXL 



for planting any Sort of Corn, or other Seeds that 

 are near about the Bignefs of Seeds of Corn : He may 

 make it with a fingle Row of Sheats, by placing as 

 many of thefe fore Sheats as he pleafes in the Plank, 

 which may be longer or fhorter, as he thinks fit 5 and 

 he may add a Beam betwixt every Two of them, 

 with a Sheat in it, like thefe hinder Sheats; and then 

 the Drill will be double, having Two Ranks of Shares. 

 But I muft advife him never to make a Drill with 

 more Shares than will be contain'd in Four Feet 

 Breadth, that is, from the outermoft on the right 

 Hand, to the outermoft on the left Hand ; for mould 

 the Drill be broader, fome of the Shares might pafs 

 over hollow Places of the Ground without reaching 

 them, and then the Seed falling on the Ground would 

 beuncover'd in fuch low Places. 



To a Drill that plants upon the Level, Marking- 

 wheels are neceffary, to the End that every Row may 

 be at its due Diftance : As in a Drill with Five Shares, 

 for planting Rows Eight Inches afunder, Four of the 

 Fivecannoterr, hecaule Four equal Spaces are included 

 betwixt the Five Shares -, but the Fifth (which we 

 call the parting Space) being on the Outfide uncon- 

 fin'd, would icarce ever be equal, were it not kept 

 equal by the Help of the Marking-wheels. The Rule 

 for fetting of thefe is thus : We compute altogether 

 the Five Spaces belonging to the Five Rows ; which 

 being in all Forty Inches, we fet the Marking-wheels 

 Eighty Inches afunder, that is, double the Diftance of 

 all the Spaces, each Wheel being equidiftant to the 

 Middle of the Drill, which Middle being exactly over 

 the Horfe-path, when the Drill is turn'd, the Horfe 

 goes bactc upon the Track of one of thefe Wheels, 

 making his Path exaftiy Forty Inches diftant from 

 his laft Path : By this means alfo the Rows of the 

 whole Field may be kept equidfftanr, and parallel to 

 one another •, fo that it would be difficu t for an Eye 

 to diftinguifh the parting Rows from the reft. 



But 



