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Scientific American, Vol. 17, No. 3 (1867) (1867)

leaf 3

An illustration from Scientific American, Vol. 17, No. 3 (1867), 1867, leaf 3
eir guns might not be silenced, it would adaptability for pontoon only require a certain amount of time for a fleet of iron-clads, etc.; bridges for crossing presuming them not to be seriously injured by the fire of the rivers ; protection to life, in forts, to pass the range of their guns, and to… … ese bulkheads would join in the center. This method gives forts and other permanent defences, at the same time that greater protection would be afforded to inland towns on tidal g from partial but otherwise serious in- rivers and to harbors, as owing to their light draft of water at the same time…

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