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A

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32

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MARCUS

HYMAN'S (EXETERSTREET) for a COMPOSITION for SHAVING without the USE of RAZOR,

SOAP, or WATER.

THIS compofition is prepared and ufed in the following manner: mix one pint and a half of clear lime water, two ounces of gum-arabic, an half-ounce of ifinglafs, an eighth of an ounce of cochineal, a quarter of an ounce of turmericroot in powder, an eighth of an ounce of falt of tartar, and an equal quantity of cream of tartar together; boil them for one hour at least (tirring up the mix ure during the whole time of boiling, and being careful not to let it boil over), clear it through a fieve; then add two pounds and an half of iron pumice stone finely pulverized; mix the whole together into one cake with the white of eggs. The cake fo made is to be divided into twelve fmaller ones; dry them in the open air for three days, put them into an oven of moderate heat for twenty-four hours, when they will be completely dry, and fit for ule. Apply them with a gentle friction to the beard, and they will produce the complete effect of shaving.

Obfervation.-As foon as we saw this patent composition announced, our expectations were raised, and we hoped that a portion of our daily labour would no longer be neceffary. How much we were disappointed every reader will eafily conceive, when he understands that, instead of the operation of foap and a razor, the ufe of a new-formed grindstone is recommended. What effect iron pumice-one will have on the lips and chin, we know not from experience; but we fhould not expect that the operation would be either very eafy or very quickly dispatched.

MR.

GEORGE MEDHURST'S (BATTLEBRIDGE) for a condenfing WIND EN GINË, capable of being applied to all KINDS of PURPOSES in which STEAM, WIND, WATER, or HORSES are used.

We shall find more difficulty in defcribing the merits of this invention, than we did thofe of the laft. The drawings that accompany Mr. Medhurst's fpecification, are neceffary to the illuftration of his machinery. He first condenses the air of the atmosphere, in a ftrong and clofe veffel, by means of a wind-mill, fo as to make it from ten to twenty times more denfe than it is in its natural state: the dense air from the magazine is conducted through a pipe

to the top of a cylinder, where it acts upon a pifton, by its elasticity, without the aid of fire, and by thefe means keeps the machine in conftant motion for a tine, proportioned to the capacity of the magazines though the wind do not blow. The object of this invention is to accumulate and preferve the irregular power which the wind produces, fo that it may be, ap lied to machinery, to produce an uniform and regular motion whenever it is wanted. The wind-mill fails are conftructed in the ufual vertical manner; but if a greater power is required than can be obtained in that manner, they are then conftructed according to a method defcribed in the fpecification.

By means of an inclined plane and fcrew, the condensing pifton is made to work a long or a thort stroke according to the ftrength of the wind, and the denfity of the air in the magazine. When the wind is ftrong, or the air in the magazine not much condented, the inclined plane is to be fet at a great angle, that the piston may make a long stroke, and drive into the magazine a greater quantity of air; but when the wind is weak, or the air in the magazine tiongly condenfed, the inclined plane must be fet at a lefs angle. Thus the full effect of the leaft wind will be obtained, as well as of the greateit.

The regulator for railing or depreffing the inclined plane is next defcribed by. means of drawings: and the form of the magazine is faid to be spherical, or cylindrical, with femi-fpherical ends, according to the fituation and circumstances. The materials are copper, plate-iron, or caftiron; and when large, caft or wrought into fegments, and fcrewed together, being painted or varnished in the infide, to make them air-tight. Where it is practicable, fays the patentee, "I make an excavation under ground, fo much below the furface, that the incumbent earth may be fufficient to refift the force of the confined air, and line the excavation with lead, copper, or caft-iron, or with bricks or tiles cemented together, and covered on the infide with pitch, paint, varnish, or any bituminous matter, to render it air-tight; and to and from the magazine I conduct the air by a firong cast iron pipe, on or near the top of which mult be a fafety valve, for the fecurity of the magazine, and a stopt cock, to close the pipe occafionally.”