Guion Line, 155, 156, 212 Hall, Samuel, 136 Hamburg-American Line, 207, 212 Harbour-deck of turret-ship, 246; of trunk-deck steamer, 248 Harbours, depth of, 211; dredging of, 239 Harland, Sir Edward, 152, 168 Harland and Wolff, 151, 207, 209, 211, 212, 217, 289, 294, 295 Harrison Line, 216 Harwich-Hook of Holland route, 229 _Helen McGregor_, the, 128 Helm, developments of, 90 Hero (130 B.C.), application of steam power by, 19 _Hesperian_, the, 307 _Hibernia_, the, 222 _Himalaya_, the, 134 _Hindostan_, the, 114 “History of American Steam Navigation,” by J. H. Morrison, 44 “Hogging,” 98, 102 _Hohenzollern_, the, 279 Holt Line, 220 Holyhead as port, 221 Holyhead-Kingstown service, 222 Horse-power, definition of, 39; in relation to speed, 67 Houlder Brothers, 216 Howden draught system, 209 Hudson, the, steamers of, 261 Hudson-Fulton celebrations, 69, 70 Hulls, Jonathan, inventions of, 29, _et seq._, 258 Ice-breakers, 250–1 India, first steamship voyage to, 94; first steamships to, 114 _Inez Clarke_, 258 _Inland_, the, 245, 248 Inman Line, iron steamers of, 147; Atlantic competition, 148, 165 Institution of Naval Architects, 319 “Intermediate” ships, 178, 220 _Ioland_, the, 280 Irish Channel, steam service across, 221, _et seq._ Iron, first use of in masts, 122; first steamboat of, 124; general use of, 145; advantages of, 146 Isle of Man Steam Packet Co., 230 Ismay, Mr. T. H., 151 _Ivernia_, the, 167, 178, 220 _James Watt_, the, 77, 93 _Jenny Lind_, the, 268 _John Bowes_, the, 242 Jones, Sir Alfred, 216 _Kaiser Wilhelm der Grosse_, 174, 175, 177, 178, 179, 180, 198, 207, 302, 306 _Kaiser Wilhelm II._, the, 149, 162, 179, 180, 198, 207, 209, 306, 326 _Kentucky_, the, 107 _Kronprinzessin Victoria_, the, 236 _Lady Lansdowne_, the, 124 Laird, John, 124 Lane, Thomas, association with Fulton, 85 Launch, conduct of a, 290 _Laura_, the, 229 _Laurentic_, the, 209, 211, 318 “Leibnizens und Huygens Briefwechsel mit Papin,” by Dr. Ernst Gerland, 23 _Leinster_, the, 222 _Leviathan_, the, 240 _Liberty_, the, 280, 303 “Life of Robert Napier,” by James Napier, 78 Lifeboats, 254–6 Lifeboats, steam, application of Allen’s principles to, 28 _Lightning_, the, first mail steamer, 93 Liner, inauguration of, 104, _et seq._; transition state of, 145; luxuries of, 300–4; navigation safeguards of, 305; ventilation problems, 327; commissariat difficulties of, 325 “Link-motion gear,” 142 _Livadia_, the, 274, 276 Liverpool, first steamship in, 83; depth of water at, 239 Liverpool Screw Towing and Lighterage Co., 235 Livingston, Robert R., association with Fulton, 48–9, 60 Lloyd’s, committee of inquiry into fires, 324 Lobnitz & Co., Messrs., 239 _London_, the, 162