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Scientific American, Vol. 61, No. 11 (1889) (1889)

leaf 5

An illustration from Scientific American, Vol. 61, No. 11 (1889), 1889, leaf 5
nders in his labors, however, but left them to be taken up cording to the contract, the Philadelphia should be by Dr. Maddox in 1878. Maddox perfected the gela- it unnecessary to renew them oftener than once in two completed on October 27 next. This cannot be ac- or three evenings, unless the lamp… … carries a pinion which engages the action than any other upon the ordi- nary sensitized plate; consequently, bevel wheels on the carbon-supporting they come out in the photograph shafts. When the current is normal, pretty much as if they had been white. We want off the ways, and the engine shafting…

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