Scientific American 311 NOVEMBER 8, 1902. DREDGING FOR GOLD. pelled by the action of gravity to a BY ENOS EROWN. pass constantly by this vertical Gold dredging as carried on at cannot preserve a fixed direction Oroville, Butte County, California, in space; but, according to one of is as interesting… … rock is the richest in treasure. just as the inhabitant on the earth A LAVA-BED DREDGER. The soil above bedrock is the, can create for himself, by means hama by direct line to San Francisco is 4,000 miles. deposit of Feather River, which is the largest affluent of the pendulum, a kind of compass…
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