Hennebique system, 260 Henry, Cape, lighthouse, 20, 199-200 Héve, Cape, lighthouse, 218, 219 _Hinemoa_, New Zealand Government steamer, 235, 236, 238 Hoheweg lighthouse, 138 Hole-in-the-Wall, Vancouver, 174 Holland coastline, 48 Holmes, Professor, fog-horns, 60-62, 64, 66, 218 Holophotal revolving apparatus, 33 Hong-Kong, 264 “Hoo-doo,” 91 Horaine, plateau of, 153-56 Horn, Cape, 268 Hornum light, the electric installation, 226-28 Howe, Cape, 230, 232 _Huddart Parker_, liner, wreck, 236 Hudson Bay coastline, 268 Hugo, Victor, “The Toilers of the Sea,” 269 Hunting Island tower, South Carolina, 19-20 Huron, Lake, 211 Hynish harbour, 107 “Hyperradiant,” the, 37, 41; the quicksilver trough, 42-43 “Ice-breakers,” 201 “Ice-stoves,” 200-201, 210 Inchcape. _See_ Bell Rock Ingrey, Charles, scheme for Ailsa Crag, 64, 66 Invercargill, 237 Iona, 100 Ireland, Congested Districts Board beacons, 282-83 Irish lights, Commissioners of, 7; the Fastnet, 123, 127 Iron, use in construction, 19-20 Islay, 298 Jamaica coastline, lighting, 283 Japan, coastline, lighthouses, 9-10, 257-58 Java, 257 Jersey coastline, 243 Jument of Ushant, 156, 160 Karachi, unattended light, 281 Kavanagh, James, the Fastnet, 125, 128 “Kingdom of Heaven,” 92 Labrador coastline, 169, 268 Lagerholmen lighthouse, 278 Lampaul, Bay of, 157 Land’s End coastline, 247 Lard-oil as fuel, 46, 47 Leasowe lighthouse, 16; fire at, 309 Lenses, preparation, 39, 40 Lewes, Delaware, 144 Lewis, Isle of, 113 Lewis, Winslow, invention of, 34, 35 “Light-boats,” 294 Lighthouse Board, U.S.A., 178-79 Lighthouse dues, origin, 4, 7; levy of, 7, 239 Lighthouse Literature Mission, 306 Lighthouses, construction of, 174; wooden towers, 198; electric, of the world, 218-28; unattended, 267-83; floating, 284-300 Lighting: candles, 33; Fresnel system, 28-33; holophotal revolving apparatus, 33; hyperradiants, 33-41; sperm-oil, 46; colza-oil, 46-47; lard-oil, 46, 47; petroleum, 47-48, 296-98; paraffin, 47-48; oil-gas, 48-49, 296; various gases, 49-50; electric lighting, 50-51, 148, 295-96; acetylene system, 69-71, 238, 291 Light-keepers, life of the, 301-17 Lights: wood or coal in open braziers, 28; tallow candles, 28; indentification of, 32; classification of, 37, 44-45; “divergence,” 39; focal point, 39; white and coloured, 45-46; candle-power, 51, 53; subsidiary, 53-55; duration of flash in revolving, 55-56 Lightships: the Stevenson unattended, 70; maintenance of, 240-41; description, 241-42; the Minquiers light, 243-44; average crew for, 244-45; incidents, 244-55; illuminating apparatus, 255-57 “Light valve,” the Dalén, 275-78 Lipson’s Reef, 55 Little Brewster Island lighthouse, 196-197