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All sorts of wheel-carriage, improved : wherein it is plainly made appear, that a much less than the usual Draught of Horses, &c. will be requir'd, in Waggons, Carts, Coaches, and all other Wheel Vehicles, as likewise all Water-Mills, Wind-Mills and Horse-Mills. This Method being found good in Practice, by the trial of a Coach and Cart already made, shews of what great Advantage it may be to all Farmers, Carriers, Masons, Miners, &c. and to the Publick in general, by saving them one half of the Expences they are now at in the Draught of these Vehicles, according to the common Method. The whole illustrated with Copper Plates. And an Explanation of the Structure of a Coach and Cart, according to this Method / by Jacob Rowe, Esq
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ounces: And according to the first Chapter,>the acting distance being sour soot, contain-ing forty eight Semidiameters (being one inch)of the Axis, the Friction thereof (supposingthe Axis to turn on a dead Surface) is equalto fifty ounces; but the Ratio between theupper Sector being forty two inches, and theRadii of the little Wheel being one inch,gives forty two for the Quotient; and theRatio of the second or the lower Sector beingthree soot and half, or forty two inches long,and the Semidiameter of its Axis being butthree tenths of an inch, the Quotient is ahundred and forty, which Quotients multi-plied one into the other, gives 5880 for theDenominator, having fifty ounces; the deadFriction for the Numerator or ~ or whichdemonstrates that four grains and .08 of onegrain is sufficient to break the Balance, when.a hundred pounds Troy is contained in each;Scale, which method of cancelling the Fric-tion will be useful in all other vibrating Mothons, too many to be here enumerated.

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