Ingraham, Captain Duncan Nathaniel, demands the surrender of Martin Koszta, an American citizen detained on the Austrian war-ship _Hussar_, iii. 385; medal presented to him by Congress, 386. Inland navy an imperative necessity to reach the heart of the Confederacy, iv. 241. Inman, Lieutenant William, chases and captures a pirate schooner, iii. 335. _Insurgent_, French frigate, Captain Barreaut, captures the American ship _Retaliation_, i. 316; battle with the _Constellation_, 320–322; surrenders, 321; lost at sea, 330. International law, a question of violation of, iv. 160. _Intrepid_, formerly the _Mastico_, used as a fire-ship at the attack on Tripoli, i. 371; explodes, 378. _Investigator_, Federal merchant-ship, captured by Confederate cruiser _Sumter_, iv. 415. _Iowa_, United States battle-ship, iv. 534, 536. Ironclad warfare, superior activity of the Confederates in preparing for, iv. 184. Ironclads, the Confederate Government the first to construct, iv. 185; the _Merrimac_ launched, 188; Congress makes appropriation for construction of, 190; dilatory action of Naval Board in making contracts for, 191; first battle between, 220. _Iroquois_, United States screw sloop, built, iv. 16. _Iroquois_, Federal screw corvette, iv. 314. Irving, Washington, on Perry’s victory on Lake Erie, ii. 338. _Isaac Smith_, Federal war-ship, in the Port Royal fleet, iv. 164. Island No. 10, strongly fortified by the Confederates, iv. 275; Foote’s flotilla arrives in front of, 276; capture of, delayed two weeks by Foote, 281; Captain Walke successfully runs the gauntlet of batteries on, 282, 283; the island captured, 283, 289; has disappeared under action of the current, 284. Isle-aux-Noix, British fort at, iii. 136, 139. Isle St. Mary, Paul Jones lands on and surrounds the house of the Earl of Selkirk, i. 147, 148. _Itasca_, Federal screw gun-boat, iv. 314; breaks down barriers placed across the Mississippi, 323; Lieutenant-commander George Brown, 389. _Ivy_, Confederate gun-boat, iv. 127. James, Reuben, seaman, saves Decatur’s life, i. 364. _James Adger_, American cruiser, captures the _Emily St. Pierre_, iv. 58; the latter recaptured, _ib._ _Jamestown_, Confederate warship, captures several prizes in sight of the _Monitor_, iv. 235. Japan, condition of, in the sixteenth century, iii. 438; experience with Christianity, _ib._; Dutch trading at Nagasaki, _ib._; introduction of Western civilization by the American fleet, 439; Commodore M. C. Perry’s work in opening the ports of Japan, _ib._; appointed to the Japan mission, 443; Commodore Perry’s exhibition of power and dignity wins the respect of, 444. _Jason_, British transport, captured by Captain Hopkins, i. 281.