The Use of this Spout is for carrying half of the Seed backwards, so that it may drop upon the Chanel, after the Earth is fallen into it: By this means the Seed lying very shallow, being only cover’d by a little Earth rais’d by the Harrow, by its Shallowness comes up in moist Weather, sooner than the other half, which lies deeper in the Ground; but if the Weather be dry when planted, the deeper half, by the Moisture of the Earth from the Dews, will come up first, and the shallow half will not come up till Rain come to moisten it; so that by the shallow or deep, the Turnep-fly is generally disappointed. _Fig._ 6. shews one of the Tines of a Drill-harrow made of Wood: Its Edge _a b_ is made roundish at _b_, by which means it raises the Earth on its Sides; but does not drive it before: This Edge from _a_ to _b_ is Six Inches long; from _b_ to _c_, 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 shoulder’d all round: It has a flat Tenon A, which passes thro’ a Mortise in the Harrow-head; the Length of which Mortise is parallel with the Length of the Harrow-head, into which it is held by a Pin, passing thro’ the Hole of the Tenon, above the Harrow; as may be seen in _Fig._ 7. at _a_; and its Fellow at _b_. These Two Tines are Eight Inches asunder at their Points, and Six Inches and a quarter asunder at their upper Parts, just 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. shews one of the Legs of the Harrow. At _a_ is seen the round Tenon, which passes thro’ the Harrow-head up to its Shoulder, and is pinned in thro’ an Hole of the Tenon just 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 Thickness is an Inch and a quarter, and its Breadth an Inch. The Two Legs are seen mark’d C, D, in _Fig._ 7. They bend down in the Middle, to give the Harrow the more room for rising and sinking; they are parallel to each other, and distant a little more than the Breadth of the Beam, that they may have Liberty to move thereon, when one End of the Harrow-head sinks lower than the other, by the Unevenness of the Ground.