Side Elevation of the “Kaiser” 122 The “Sachsen” 123 U. S. Side-wheel Steamer “Powhatan” 150 U. S. Frigate “Franklin,” of the “Merrimac” Class 152 U. S. Sloop-of-war “Hartford” 153 U. S. Sloop-of-war “Brooklyn” 154 U. S. Sloop-of-war “Kearsarge” 155 U. S. Iron-clad “New Ironsides” 156 U. S. Monitor “Passaic” 156 U. S. Double-turreted Monitor “Terror” 157 U. S. Frigate “Tennessee” 159 U. S. Sloop-of-war “Adams” 160 U. S. Sloop-of-war “Marion” 161 U. S. Sloop-of-war “Alert” (Iron) 162 U. S. Sloop-of-war “Trenton” 163 U. S. Frigate “Chicago” (Steel) 169 Deck Plans of the U. S. Frigate “Chicago,” showing Battery 171 Deck Plan of the U. S. Sloop-of-war “Atlanta,” showing Battery 171 U. S. Sloop-of-war “Atlanta” (Steel) 173 U. S. Despatch-boat “Dolphin” 176 Light Draught Coast-defence Vessel, with Deck Plan 180 The Howell Torpedo 182 Bronze Breech-loading Cannon captured in Corea, age unknown 194 Bronze Breech-loader used by Cortez in Mexico 195 Breech-loader captured in the War with Mexico 196 Bronze 12-pounder, “El Neptuno,” 1781 197 U.S.N. Carronade, Slide, and Carriage 198 U.S.N. Medium 32-pounder 199 U.S.N. 9-inch Dahlgren (9-inch Smooth-bore) 201 Horizontal Section of Millwall Shield 204 A Krupp Gun on a Naval Carriage 206 Alfred Krupp 207 Breech-loading Rifle-tube ready for receiving Jacket 210 Breech-loading Rifle-jacket, Rough-bored and Turned 210 Putting the Jacket on a 6-inch Breech-loading Rifle-tube 211 Breech-loading Rifle after receiving Jacket 214 A Krupp Hammer 215 Transporting Cannon at Bremerhaven 217 Breech-loading Rifle after receiving Jacket and Chase Hoops 218 Breech-loading Rifle with Jacket, Chase Hoops, and Jacket Hoops in place 218 U.S.N. 6-inch Breech-loading Rifle 218