n general, an improved lamp that is not cilities in their investigations. It is a platform scale in con- stant equilibrium; it registers continuously the variations in The oil is supplied from a central reservoir of con- weight of any object placed upon it—animated, such as an a striking manner.… … Our engraving represents scend by gravitation. this ingenious apparatus. On Mr. Samuel Hedges, of a stand next to the platform Wheeling, West Va., has pat- are placed the registering cyl- ented an improvement upon inder, P, the clockwork, H, that form of Window Shade which rotates slowly, and the…
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