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Scientific American, Vol. 20, No. 10 (1869) (1869)

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An illustration from Scientific American, Vol. 20, No. 10 (1869), 1869, leaf 0
e ; and here or spring, or any other suitable the visitor is dressed in a long device, can be attached, if de- coarse linen blouse, to protect sired, to the block for the purpose his clothing while underground. of graduating its amount of A door is opened and he goes pressure on the cylinder. down… … servablein many places upon their bodies, s neglected until the mischief is done. It making them present a very grotesque ap- driver instinctively clings, would be much better than any in- ! specimens may be seen. : torches and lamps, added to the dampness of the air, blackens dependent and…

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