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Scientific American, Vol. 36, No. 7 (1877) (1877)

leaf 3

An illustration from Scientific American, Vol. 36, No. 7 (1877), 1877, leaf 3
dark vapors whieh cut off the light from that inventions dawn gradually on the contemplat- the lower strata. They are the result of violent ing mind; a certain fixed idea becomes, step by step, developed, by patiently weighing the pros and cons, until at last a sort of electric spark convulses the… … bills as they do in their native state. Sometimes the pro- tuberance has been clipped off, but it rapidly grows again.

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