It followed as naturally as day follows night that a shrewd and intelligent people, engaged in a desperate struggle for self-preservation, would avail themselves of all means provided by military science for carrying out the contest in which they were engaged. Iron-clad vessels had been devised in both England and France, but they were merely frigates designed on the old lines and partly covered with a sheathing of armor. With characteristic energy and ingenuity the Americans, ignoring old traditions and seeking the shortest road to the fulfillment of a manifest want, produced simultaneously the Merrimac and the Monitor, the former resembling “a gabled house submerged to the eaves,” and the latter looking like “a Yankee cheese-box upon a raft.” These novel vessels met in their memorable combat at Hampton Roads, and the booming of their guns sounded the death knell of the old wooden navies. As with war vessels, so with firearms. New conditions were met with inventive genius and mechanical skill. Though the great mass of our troops continued throughout the conflict to use the muzzle-loading rifle, breech-loaders were in the hands of many thousands of our soldiers before the close of the great contest. In 1864 the cavalry of Sheridan and Wilson and many regiments of infantry were armed with breech-loading carbines, which gave them a great advantage over their opponents. The effect of the breech-loaders upon the Confederates was unpleasantly surprising to them, and the Southern soldiers are said to have remarked with dismal humor that “the Yankees loaded all night and fired all day.”