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Scientific American, Vol. 64, No. 13 (1891) (1891)

leaf 3

An illustration from Scientific American, Vol. 64, No. 13 (1891), 1891, leaf 3
this, but the par- here present of a vault built upon this principle by was put there by the sunlight that fed and nourished ticles will scratch the copper segments. Filing a com- it when it existed, ages ago, as trees and plants. some of the students of Columbia College School of mutator is not… … great many currents in into which the file is to the wire suddenly de- be dipped before com- composes all the fluids in his body. The salt in the menecing work and as often afterward as occasion may city. This experiment clearly proves that a vault ean require. Thesmall amount of moisture that will…

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