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Scientific American, Vol. 55, No. 26 (1886) (1886)

leaf 7

An illustration from Scientific American, Vol. 55, No. 26 (1886), 1886, leaf 7
the fire of, for keeping the enormous water influx down is of re- ships engaging .forts at close quarters or attempting markable capacity, capable, it is said, of raising over 25,000,000 galléns per day. The tunnel has been lined ™ to force a fiassage by pouring an incessant fire in with vitrified… … water tight. its economy in men for serving

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