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Scientific American, Vol. 4b, No. 21 (May 1861) (1861)

leaf 3

An illustration from Scientific American, Vol. 4b, No. 21 (May 1861), 1861, leaf 3
n fortifications. As wall from the external face, and from this point the j signed to be of sufficient thickness to resist the force the walls of forts are made very thick, it would be embrasure Hares both ways. By this arrangement, an | of any shot or shells that may be thrown upon them.… … liable to be broken by the enemy's shot. This is the unless the embrasures or openings through which the Fin., and is now besieged by Si-veral thousand seces- cannon aie fired are made flaring. Tt has been the style of embrasure in all of our fortifications which sionists, though it is thought,…

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