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Scientific American, Vol. 92, No. 15 (April 15, 1905) (1905)

leaf 8

An illustration from Scientific American, Vol. 92, No. 15 (April 15, 1905), 1905, leaf 8
hich might raise smith has created a curious but very appropriate sign. the ball there, causing it to slip downward correspond- what extravagant claims occasionally made for this In fact, it represents not only his industry, but the ingly on the north side. Prof. Gilbert suggested that discovery.… … extensive machinery to move it. Since this photograph was taken the bail has rotated 14 inches eastwar«. A number of theories have been A BALL OF STONE THAT TURNS SPONTANEOUSLY ON advanced to account for the cause ITS PEDESTAL, of this natural phenomenon. State Geologist Edward Orton, socket and…

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