has an odd number of sides, a diameter which bisects a sideon one side of the center bisects an angle on the oppositeside; thus proving that the sides are regular, and conse-quently equal. Albert Bohdeli.Philadelphia, Mo BY PKOFESSOK A. RIOCO, OF MODENA, ITALY. … The following simple device, which I have invented, isproductive of very brilliant results. The two pulleys, a a,are made to turn togfltherby means of the crank,and communicate their mo-tion by means of endlesscords to the wheels, 6,to which are attached twodisks of cardboard, A,B. Inthe anterior…
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