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Scientific American, Vol. 93, No. 2 (1905) (1905)

leaf 4

An illustration from Scientific American, Vol. 93, No. 2 (1905), 1905, leaf 4
have In fact, they are mounted on small rotary shafts, lew, cylindrical vessel in which turns a shaft provided shown the possibility of telephoning and writing simul- to which are fixed magnetic rods, set vibrating by the with paddles. Such an apparatus takes some 7 horse- taneously on the same… … Message automatically from the crete blocks.

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