608 IMPROVEMENT OF

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then at the time of fowing to guide the wheel next to the part laft fown exa@ly in the rut, which was laft made; by which guide the rows will all of them be accurately at nine inches diftant from each other.

The Simplicity of this Drill-Plougb.

5. The fimplicity of this machine confifts firft in its having only a feed-box, and not both a hopper and a feed-box, as in the Rev. Mr. Cook’s patent drill-plough.

2. The flues, which conduét the feed from the bottém of the {eed-box into the drill-furrows, are not disjoined about the middle of them to permit the lower part to move to the right or left, when the horfe fwerves from the line, in which the coulters pafs, as in Mr. Cook’s patent drill-plough; which is done in this machine by the fimple univerfal joint at=, Plate I. fig. 1.

3. In this machine the horns or fhafts behind, between. whieh the perfon walks, who ouides the coulters, are fixed both to the coul- ter-beam, and to the axle-tree; whereas in Mr. Cook’s patent plough thefe are all of them moveable joints like a parallel rule, for the pur- pofe of counteraétins the fwerving of the horfe; which in this ma- chine is done by the fimple univerfal joint at=, fig. 1, Plate I. before mentioned,|

4. The altering the dimenfions of the holes in the axis of the fced-box by only turning a fcrew, fo as to adapt them to all kinds of feeds, which are ufually fown on field-lands.

he frons brufh of briftles, which fwecp over the excavations of the cylinders beneath the feed-box, ftrickle them with fuch ex- a@nefs, that no fupernumerary feeds efcape, and yet none of them are

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