iG Implements of Hufbandry.—Drill-Machines.

eree of accuracy. And in order to increafe or diminifh the quantity of grain de- a~~ 3 a 4

livered, the flider is covered with a cafe of tin, which has fix perforations, exactly but inftead of the bit of tin being cut

“<4 >

we

correfponding with the holes in the flider

out the whole length of the hole, part of it is left at one end equal to the thicknefs of the flider, and is bent down. after the flider is put into the cafe, in the fame manner as the tin cylinder in the above machine.‘This cafe is moveable about an inch backwards and forwards by turning the finger-fcrew, and thus the holes are made larger or fmaller in order to{uit various forts of grain, or different quantities of the fame fort.‘The flider is moved forwards by a bent iron pin which is attached to it, and which pafles into a ferpentine groove fixed to the nave of the wheel, and backwards by a fteel{pring at the other end of the feed-box. It is obferved that the fimplicity of the flider at the bottom of the feed-box in this inftrument may be, in fome refpects, greater than that of the wooden and tin cylinders in the former one, as this has but fix holes to meafure out the feed, while the other has twenty-four; but that, perhaps, in other refpects it is lefs fo, as in this there are twelve brufhes, one on each fide of each of the fix holes, whereas in the former only fix brufhes rub upon the tin cylinder. It is probable too, that as the recipro- cating motion of this flider muft be quick, as it muft aét once every time the peri- phery of the wheel of the carriage has pafled nine inches forwards, it may not be fo eafy to execute as the cog-wheel and uninterrupted movement of the axis and cylinder in the preceding drill*.

A machine of this kind, invented by Mr. Amos, and defcribed in his treatife on drill hufbandry, is faid to be a good, cheap, and convenient tool. Grain, feeds, and pulfe of all forts, are aflerted to be eafily fown by this inftrument on every defcription of land, in any quantity, and at fuch depths and diftances as may be required. It is conftructed with fpherical cups and fows, at a great variety of different diftances, both in refpect to the rows and the intervals, performing its bufinefs with much difpatch and little{trength of draught+. The drill part of the machine may be fixed to the beam of any common plough.‘There are, however, feveral other imple- ments of the fame kind made by different perfons, which have been found to per- form equally well.

Mr. Cook’s improved Drii/ is a well-conftructed inftrument, and on certain light foils is found to anfwer perfectly; but on others it is faid to be liable to deliver the grain with fome inequality. An intelligent agricultor, who has had much expe- rience, of it, however, remarks, that it is an implement which will depofit any

* Phytclogia, p. 609,+ Amos on Drill Hufbandry,