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Scientific American, Vol. 40, No. 9 (March 1879) (1879)

leaf 3

An illustration from Scientific American, Vol. 40, No. 9 (March 1879), 1879, leaf 3
on. Those having The marked success of this concern is due to a careful the girls. The doctor thought he was now on the road 'to selection of material, scrupu- the discovery, and concluded for the nonce to play an lous care in manufacturing amateur detective. He visited the old woman, and soon and… … number to the clocks to be regulated. From here the air Pig. 1.—PNEUMATIC REOTTLATOR POR CLOCKS Fig. 2.-PNEUMATIC CLOCK. acts directly on the gearing the least imperfection are rejected, and only the absolutely of the second and minute hands of the cloclts. The fur- afflicted by arsenic poison…

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