600 IMPROVEMENT OF

rings at one end inftead of perforations, as at ww, Plate X. Fig. 1. Thefe tin flues deliver the feed at the time of fowing into the ai furrows or drills, which are made by the coulters before them.

° Thefe feed-flues have a joint at x, where one part of the tin tubes flides into the other part, and they by thefe means can be occa- fionally fhortened or lengthened to accomodate them to the coulters, when placed at feven inches diftance for fowing barley, or at nine for ‘{owing wheat.

At the bottom of this feed-box are fix holes, one in each cell, to deliver the corn into the excavations of the cylinder, which revolves beneath them. Thefe holes are furnifhed on the defcending fide, as

the cylinder revolves, with a ftrong brufh of briftles about three fourths of an inch long, which Et hard on the tin cylinder. On the afcending fide of the revolving cylinder the holes at the bottom of the feed-box are furnifhed with a piece of ftrong fhoe-foal leather, which rubs upon the afcending fide of the cylinder. By thefe means the corn, whether beans or wheat, is nicely delivered, as the axis re- volves, without any of them being cut or bruifed.

Confiru£tion of the iron axis and wooden cylinder beneath the[red-box. Phte XI: Fig. 3:

An iron bar is firft made about four feet fix inches in length, and an inch fquare, which ought to weigh about fifteen pounds; this bar is covered with wood, É. as to make a cylinder four feet long, and two inches in diameter, as at£#£, Plate XI. Fig. 3. The ufe Gf the iron bar in the centre of the wood is to prevent it from warping, which is a matter of great confequence,

This wooden cylinder pafles beneath the bottom of the feed-box, and Ras a caft-iron cog-wheel at one end of its axis, as at 77, which is one fourth of the diameter of the correfpondent caft-iron wheel,

which