transmission i»y ceiegrapu. (jHngurrrtolj po HUcorcry.It is well known that ilio edge of the t sharpest and most polished lancei, looks as blunt as the buck of u cuso knife, ami n*jngged as a saw, in viewing it through a microscope.—The finest painting thus viewed becomes rough and uneven, ami , is entirely dcstituto of beauty of coloring (or outliuo. It is not so with the photo- jgraphic art. A professional gentleman of this city a few days since applied a microscope to a daguerreotype miniature, and to his surprise it became a life like bust,” or cast, with the natural coloring of the hair, the eyes and the dress, with the natural expression of countenance. ‘ The hust will appear nn of piaster, of , granite, or of Parian marble, according to the purity of the glass sot over the picturo. —To test this discovery lake a microscope—u watch maker's eye glass for instance—apply it to the eyo, am! in a proper light, range it at tho true focal distance from tho picture, and you have n view that is truly wonderful. It may bo used to delect any imperfections of tho picture not perceptible to the naked eye.—Sci* antific American.