Inside Out Library · Explore
Scientific American, Vol. 43, No. 1 (1880) (1880)
leaf 6
out of the depths, and im- narrow gauges would ramify out from Leadville into every pregnating and permeating the hanging and foot walls of ence, and the other is sent to the assayer, who takes his the contact. No free oxygen was contained in these sre | mineral bearing gulch that was found… … © 1880 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 43, No. 1 (1880)
More like this
