Chap. XXIL. Of the Turnep-Drill 3S3 



firft, and the (hallow half will not come up till Rain 

 come to moiften it ; fo that by the (hallow or deep, 

 the Turnep-fly is generally difappointed. 



Fig. 6. (hews one of the Tines of a Drill-harrow 

 made of Wood : Its Edge a b is made roundifh at b 9 

 by which means it raifes the Earth on its Sides; but 

 does not drive it before : This Edge from a to b is 

 Six Inches long ; from b to f, being its Bottom, is 

 One Inch and a quarter; from c to d is the Back, an 

 Inch and an half thick at Top, gradually tapering 

 downwards to c, where it is half an Inch thick, being 

 fhoulder'd all round : It has a flat Tenon A, which 

 paries thro' a Mortife in the Harrow-head ; the Length 

 of which Mortife is parallel with the Length of the 

 Harrow-head, into which it is held by a Pin, paffing 

 thro' the Hole of the Tenon, above the Harrow; as 

 may be feen in Fig. 7. at a ; and its Fellow at b. 



Thefe Two Tines are Eight Inches afunder at their 

 Points, and Six Inches and a quarter afunder at their 

 upper Parts, juft under the Harrow- head. The fore 

 Edge of the Tine A inclines a little to the Left, as 

 the Edge of the Tine B doth to the Right. 



Fig. 8. (hews one of the Legs of the Harrow. 

 At a is feen the round Tenon, which paifes thro* the 

 Harrow-head up to its Shoulder, and is pinned in thro* 

 an Hole of the Tenon juft behind the Harrow-head; 

 upon this Tenon the Harrow-head may turn : The 

 other End has an Hole at b, thro' which it is pinned 

 on to the Beam. The Length of the Leg from the 

 Shoulder at a, to the Hole at b, is Twenty Inches: 

 Its Thickneis is an Inch and a quarter, and its Breadth 

 an Inch. The Two Legs are feen mark'd C, D, in 

 Fig. 7. They bend down in the Middle, to give the 

 Harrow the more room for rifing and finking ; they 

 are parallel to each other, and diftant a little more 

 than the Breadth of the Beam, that they may have 

 Liberty to move thereon, when one End of the Har- 

 row-head finks lower than the ether, by the Uneven- 

 nefs of the Ground, The 



