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Scientific American, Vol. 54, No. 19 (1886) (1886)

leaf 5

An illustration from Scientific American, Vol. 54, No. 19 (1886), 1886, leaf 5
e issharpened. Within depth has never been attempted, even in this age of magazines as long as there was a shot in the locker. the outer. tube are placed, at equal distances apart, wonderful engineering, and on this account principally three cylinders or dredging tubes, 8 feet in diameter, An… … worked in the center or one of the end dredging armean be used indefinitely in its present form as a tubes. Thus, by making one dredge take two loads tion both in this country and Europe. The following single loader, until the necessity arises for the quick- from its own end tube and one from the…

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