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Scientific American, Vol. 22, No. 9 (1870) (1870)

leaf 7

An illustration from Scientific American, Vol. 22, No. 9 (1870), 1870, leaf 7
e steel spindles, self-oiled common photograph album for their classificatiou, preserva- may be exposed to. ‘Two safety-valves corroded first in their bearings, and power feed. tion, and display. Tne invention we herewith describe and illustrate igs de- The castings weigh from 1,500 to 4,500… … manufactured from tin mined in the United States has just been completed in San Fran- cards shall be uppermost, a card will slide across the partition to their duties. on that side which is inclined under, and by turning the case Numerous assays have been made of this ore by chemists should receive…

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