34-o Of the Drill-Boxes. Chap. XX, 



than the Notches are defign'd for, and when we have* 

 no Opportunity of changing the Wheels for fuch as 

 are lower, nor of changing the Spindle for another 

 that has greater or more Notches in it. 



Four-and-twenty Gallons of large Peas are as pro- 

 per a Proportion to drill on an Acre, as Six Gallons 

 of Wheat are. 



There are divers Ways to vary (*. e. increafe ordi- 

 rriinifh) the Proportion of Seed ; as, Firft, by the 

 Setting-fcrew, with which we can, without any In- 

 con veniency, fet the Tongue fo far from the Spindle, 

 as to permit one Round of the Notches to turn out 

 Four times the Quantity, as it will do when the 

 Tongue is fet clofe up to the Spindle ; and thus we 

 can vary the Proportion by innumerable intermediate 

 Degrees. 



Next, if we would increafe the Proportion yet 

 Farther, we can inlarge the Notches ; but we cannot 

 add to their Number, unlefs there be room to double 

 It, by making a new Notch between every Two ; 

 but we cannot diminifh the Proportion of Seed by 

 the fame Notches, becaufe they cannot be madelelfer 

 or fewer. 



If we would make any other Alteration in the Pro- 

 portion of Seed by the Notches, it muftbe done by 

 making another Set of them ; which we may do, be- 

 caufe the wooden Spindle may have Three Rows of 

 Notches in it, of which we may ufe either, by move- 

 ing the Wreaths and Wheels towards one End or the 

 other of the wooden Spindle ; as fhall be fhewn in 

 the Defcriptions of the Hoppers. 



But as for the Brafs Spindle of the Turnep-drill* 

 we can have but one Set of Notches in it (a) : And 



there* 



(a) But by putting on a Wreath (that is a little broader than 

 the Mortife) upon the Spindle (made longer for that Purpofe) we 

 can, by changing this Wreath from one End of the Spindle to 

 the other, have Two fets of Notches of different Sizes, and of 



different 



