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ON AT HE PLOUGH.| 152

other circumftances being equal, is a draw- back on all kinds of machinery, efpecially fuch as, like the prefent, muft come into un- fkillful hands, who have neither much at- tention to prevent, nor much dexterity to rectify, its diforders. It is, in the next place, very expenfive in the original purchafe, and correfpondently fo in its repairs: Neither can it be fuppofed to laft very long, on ac- count of the complication of its conftruc-" tion, the flender make of many of its parts, and their being conftantly expofed to all the feverities of the weather.

But its chief difadvantage is, that’ it is much heavier to draw than a plough of the common conftruction. The adtual refift- ence from the furrow will be nearly equal: The handles, indeed, in the wheel-plough, are fomewhat lighter; but this will produce little odds to the cattle. All the refiftence, confequently, arifing from the wheels, and all the machinery about them, is pure ad- ditional load upon the motion. If it be con- fidered, that the diameter of the wheels is commonly very fmall, that there is a very con-