Observing that persons no less distinguished than Bishop Wilkins, the Marquis of Worcester, etc., have amused themselves with such things as perpetual motion, it may be some apology for a humble individual residing as I do in a very retired part of the country--scarcely within reach of much society--to confess that by way of a little rational amusement and relief to the mind, I have at times, amid a variety of other investigations and inventions, amused myself amongst the rest, with this of perpetual motion. The result I will, with your permission, lay before your readers. That I trespass upon your pages, you are indebted to your correspondent, Mr. Linley, whose invention I thought might partially lead to an anticipation of one of my own, a model of which I constructed a short time ago. The system which first came to my mind, as likely to lead to the accomplishment of perpetual motion, was that of the syphon; experimenting with which, opened discoveries that might prove useful in hydrostatics. Amongst these was a mode of equalizing the horizontal surface of the water in two separate vessels of different altitudes. The following sketch will afford an idea of my invention. [Illustration] Let A be a vessel, having two orifices, one at the bottom of it, _a_, and the other open at the top for waste water _b_, filled to the brim. B, a reservoir, so far filled with water as not to come in contact with the bottom of the great wheel C, whose axle turns in the wood _c_, attached to the side of the reservoir; _d_, a crank fixed to the axle of the great water-wheel, which turning moves up and down the rod _e_, attached to the beam E, which works the pump D, having its cylinder inserted in the reservoir B; _f_, an upright attached to the upper vessel A, to form a support for the beam E; the whole, together with the cylinder of the pump, being supported and tied together by the woodwork _g g g_.