light coloured woods. If this be the true optical lens, and the origin of the microscope. The 708 Broadway, and will, we understand, be exhibited at the case, it is filtered through coarse blotting paper, for which principle of the stereoscope, invented by Profes- coming Fair of the American… … of gray and brown, becomes at length nearly black. material becomes charged with illuminating The alterations of color take place more speedily vapor, or gas. In this state it is passed in proportion as the light is intense. When the through the pipe, H, into the chamber, I, shadow of any figure is…
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