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IMPLEMENTS OF HUSBANDLY
ing single-horse carts, that the capacity of a two-horse cartwas no just criterion, for a cart containing twenty-two cubi-cal feeLiWas as easily drawn by a single horse, as one containring thirty cubical feet by two horses, both carts being loadedwith the same sort of materials. From this it appears, thatthe power of a horse is much greater, when working in acart by himself, than in a team of two or more together;which shews the great advantage that one-horse carts haveover those with two or three horses, in regard to the differenceih the quantity of work that can be performed by the samenumber of horses, in using the smaller carts, when the loadcan be adapted to the power of one horse *.
Notwithstanding the evident advantages of employingsingle-horse carts, in preference to double ones, yet, in manydistricts of Scotland , from the nature of the roads, and groundson which they are to be used, as well as other circumstances,they cannot always be had recourse to ; for the constructionand strength of carts, like every other sort of implement madeuse of in husbandry, must be regulated according to the pur-poses for which they are employed.
In some parts of the country it is the custom to have dif-ferent carts for different purposes; those of the close kind be-ing chiefly employed in carrying dung, and all sorts of ma-nure, or such kind of materials as are heavy; while othersare made open-spoked, and of a light construction, occasion-ally placed upon the axle and wheels of the close or coup-carts to be used for carying corn in the straw, hay, or anyother similar substances, and are generally termed corn-carts.Sometimes the close or coup-carts have a light frame, or whatis called hay-tops, occasionally fixed upon them, and are veryconvenient for carrying corn, hay, straw, or any bulky lightarticles.
• For some recent improvements in the construction of farm carts, See Ap-pends to this Chapter.