Mechanics' magazine and register of inventions and improvements . absorbs copiously and reflects little. Fromthis we see that experience has supplied theplace of science in directing the choice ofclothing. The use of light colors always pre-vail in summer, and that of dark colors inwinter. Valuable Material for Walks axdAlleys.—A soap-maker not knowing whatto do with the black sulphurous residuum ofhis ley tubs, spread it in a wet state alongthe alleys of his garden. It soon becamestiff and almost impervious to rain; the al-leys were always dry; no grass or weedsappeared on it, but the plants
Mechanics' magazine and register of inventions and improvements . absorbs copiously and reflects little. Fromthis we see that experience has supplied theplace of science in directing the choice ofclothing. The use of light colors always pre-vail in summer, and that of dark colors inwinter. Valuable Material for Walks axdAlleys.—A soap-maker not knowing whatto do with the black sulphurous residuum ofhis ley tubs, spread it in a wet state alongthe alleys of his garden. It soon becamestiff and almost impervious to rain; the al-leys were always dry; no grass or weedsappeared on it, but the plants within a kwinches of it all died. He was delightedwith this discovery of the means of enjoyingclean and dr\- walks without any trouble,having only to put a covering of clean sandover the refuse. Having occasion sometime after to repave his yard, he used thesoft refuse instead of mortar. It soon hard-ened and cemented the stones so well, thatthe heaviest carriages occasioned no disad-justment,—[Jour, des Connais. Usuelles.] 206 Machinery for Medal The above is the engraving promised inour last, of the apparatus tor producingengravings of medals by machinery appliedto the surface of the medal itself, or to thatof the caste from it j the description is by , Editor of the Register of Arts, andwhich we copy from the London MechanicsMagazine. In our Analysis of the Decem-ber number of that work, we omitted to statethat the Editor had done ample justice to theclaims America had to the invention, anoversight which Ave are glad to have an op-portunity of rectifying. Fig 1—a a represents a portion of thetable, to which is screwed a standard b, thatreceives the medal c, or other subject to becopied. To this table is also fixed a brasssocket d d, in which a bolt e, fitted lo it withgreat accuracy, is made to slide up and downby the agency of a fine threaded screw f,provided with a micrometer liead at g, for thepurpose of adjusting the motion through equalspaces.
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Keywords: ., bookcentury1800, booksubjectindustrialart, booksubjecttechnology
