eived upon the subject is of around D,—which could not possibly be the result did B make wheel around the stationary one, keeping the bottom of the itself a curiosity. They come from esteemed correspondents but one revolution. H. ANDERSON. axle in the same relative position to the stationary wheel,… … quarter of % revolution. These two together give the wheel the fixed wheel (keeping the point, A, at all times in contact) [If our correspondent will attach the thread to any conve- the appearance of having made one half revolution on arriv revolves once on its own axis, it would revolve twice on…
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