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Comte de Paris, History of the Civil War in America. Vol. 3. (ed. Henry Coppee , LL.D.), Book I:—the war on the Rapidan. (search)
ifteen guns, there was one one-hundred-and-fifty-pounder rifle and fourteen of Dahlgren's pattern, seven of which were of fifteen inches calibre and seven of eleven inches. This arm was as new to the ordnance department as the vessels that carried them were to the navy. Admiral Dahlgren, who combined the consummate experience of a naval officer with all the science of the artillerist, had substituted for the old howitzers, denominated columbiads, guns of enormous calibre of iron, cast upon Rodman's plan, which gave them an immense power of resistance. At a later period experience demonstrated that these cannon could throw, without danger, projectiles of the largest size, those of fifteen-inch calibre weighing not less than four hundred and fifty pounds, with a charge of seventy pounds of powder. But the dread of an explosion still held back the Federal officers, who had singularly reduced their efficacy by employing them only in throwing shells and loading them with no more than th