THE Commercial and Agricultural Magazine.

No. X.] MAY, 1800.(Vor, II.

THE PERSIAN WHEEL FOR FLOATING MEADOWS.

To the Editor of the Commercial and Agricultural Magazine.

SIR»

S your correſpondent P, S. has referred to ſome Machinery A on the ſubje&t of Watering Meadows, I have ſent you 2 ſketch of the wheels he mentions; but whether any are now in exiſtence, I know not; neither do I find the modern writers re- commend them. Your correſpondent calls this the Perſian Wheel: but-:I have ſeèn them repreſented with ſwing buckets, emptied by a ſpring; but it ſcems more complicated, and liable to be out of order than this. The Chineſe have an excellent wheel for this purpoſe, repreſented in Sir George Stanton's Em- baſly, which this might be rendered ſomewhat like, by intro- ducing an inner-circle, and fixing the buckets to it.

This wheel may be made like any common under-ſhot wheel; and each float might be a bucket(if there is a ſufficient force of water) if not, a part only ſhould be uſed. The water coming againít the back of the buckets keep it in motion;‘and as they riſe, the hollow part takes up the water, and retains it, as{a} in the plate. Thel ine there marks.the leyel of the water. The float(b), being horizontal, can loſe‘none: and the next, though it begins to flow toward the centre of the wheel, does not yet loſe any, as the aperture for the diſcharge of it is above its then level: but when it comes to(c),‘the water runs out into the reſervoir(d), and continues ſo to do, as long as any remains in the bucket.„From this reſervoir, troughs, on treſſels, as(e) may convey it to any part near the height of the reſervoir.

At(fg) the Tront and fide of the buckét, in the former, is ME Ne. OpenIne(I takes IN Ee| water as the wheel goes round, which, when ſufficiently elevated, diſcharges it at the lip(k) into the’ reſervoir; and placing the board(i) a little ſlanting, the water will all run out before the float has paſied the reſervoir.

The ſame old author recommends wind-mills, where a cur- rent of water cannot be procured; or where any other objec- tion to water-wheels extuts.

TW,

GOM. ΠAG MAG. Rr