given general fatisfaction to all who have seen them at work. It is found, that a woman and a boy are fufficient to work this Mangle, and can do as much work (in the fame time) as three or four perfons at any other I have feen. This induced me to present it to the Society, knowing of no other way fo likely to convey it to the community at large, as through the channel of your excellent yearly publication of the Tranfactions of the Society. If it is found worthy of a place in the Society's Repofitory, and they think it worth laying before the public, it is at your fervice, and will give me the greatest satisfaction.

I am, SIR,

Your most obedient,

very humble fervant,

Rotherham, April, 24, 1797.

Mr. MORE.

GEORGE JEE.

WView of McGeorge Jees improved. Wangle.

The DESCRIPTION of PLATE I.

A, The great wheel, which in the Machine at large is fifteen inches diameter. B, the arbor, on which the nut C is fixed. D, the handle of the winch. E, the crank, twenty-one inches long. F, the rod of the crank. GG, the hollow ftuds, to lift the ends of the bed up. HH, the levers. IIII, the four pullies fixed on the moveable bed. K, the moveable bed. L L, the ends of the rollers.

At the bottom of this Plate is a front view of one of the hollow ftuds, G, to fhew its form, as standing at the end of the bed, and into which the levers alternately enter, when it becomes neceffary to lift up the bed to put in or take out the rollers.

PLATE IÍ. is a perspective view of the Mangle when at work; the letters of reference to the several parts being the fame as in Plate I.

A Bounty of THIRTY GUINEAS was this Seffion voted to Mr. JOHN PRIOR, for his improved detached ESCAPEMENT FOR WATCHES, a Plate and Defcription of which are hereunto annexed, and a complete Model referved in the Society's Repofitory, for the infpection and use of the Public.

As

SIR,

S all our beft writers on watches agree, that the longer the vibration of a balance is, the better it will keep time, and as no detached Escapement has been made (that I know of), in which the balance paffes over the fame fpace in one vibration that mine does; I am encouraged to present this Machine, with a Drawing, and an explanation of the fame, for the infpection of the Society.

The