Diving apparatus, 472, 490, 1075, 1077, 1409.

Diving bell, 10, 16, 26, 32, 36, 41, 305.

Aristotle on, 4, 305.

Halley on, 11.

Ryerson's, 203.

Diving boat, 12, 13, 15, 41, 231, 336.

Diving box, 7.

Diving ship. See Diving boat.

Dobson submarine, 87.

Docks, Salvage. See Salvage docks.

Doughty, Thomas, Inventor of the periscope, 856.

Draeger salvage system, 639.

Drebbel, Cornelius, 10, 12, 22, 544.

Drellisbrak, Stephen, 1026.

Driggs gun, 1263.

Drydocks:

Panama canal, 682.

Pontoon, 702.

See also Salvage docks.

Dubilier, William, 1513.

Duryea, C. E., Letter, 1020.

Dyestuffs, 1084.

Dykkeren (submarine), 470.

E type, 574, 716.

E

E-2 (American), Accident to, 1064, 1069.

E-15 (British), 890.

Ears of crew, 1092.

Edison, Thomas Alva:

Opinion of F-4, 810.

Submarine problem, 1022.

Suggestion. 676.

Edison Storage Battery Company, 913.
Edwards, Lieutenant Commander, 180.
Effectiveness.

See Strategic value.

Electric Boat Company, 278, 330, 728, 907, 1233.
Exchange of patent rights, 613.

Electric Boat Company of New Jersey, 1439.

Electricity on submarines, 60, 69, 487, 494, 519, 534,
818, 851, 857, 881, 948, 1015, 1192.

Electrodes, 1330.

Elliptic sections, 430.

Strength, 158.

Emeraude, 334, 350, 400.

Emergency Fleet Corporation, 1213, 1221, 1222, 1341.
Endicott Board, 155.

Engines, Compressed air, Tygard type, 1006.
Engines, Gas and oil, 193, 344, 359, 387, 439, 464,

513, 522, 598, 608, 610, 640, 791, 797, 798, 853,
901, 1032, 1146, 1185, 1217, 1227, 1240, 1290,
1333.

Augsburg-Nurnburg type, 795, 1125, 1185, 1290.
Burmeister & Wain type, 1146.

Busch-Sulzer type, 1290.

Carel type, 1146.

Comparison of types, 796, 1125, 1185, 1290.

Craig-Diesel type, 1110, 1290.

Creusot-Schneider type, 1290.

Diesel type, 511, 579, 635, 636, 638, 719, 739, 746,

768, 795, 796, 833, 900, 1005, 1290.

Fiat type, 795, 1146, 1185, 1290.

Flack, N. D., 231.

Flag. See Ensign.

Floatability. See Stability.

Floating crane. See Salvage craft.

Floating dock. See Salvage dock.

Foca, 390, 454, 477.

Launching, 426.

Fog signalling. See Signalling.

Ford, Henry, Submarine, 775, 1130, 1298.

Fore River Shipbuilding Company, 769, 1500.
Forelj, 405.

Foucault, Accident to, 1134.

Fournier, Rear Admiral, 1430.

France, Defense against Germany, 341.

Franklin, Benjamin, Consulted by Bushnell, 17.
Fripps, J., 292.

Fuel for submarines. See Supplies.

Fulton, Robert, 19, 34, 191, 206, 238, 496, 776, 903,
1161, 1188, 1211.

Portrait, 206.

See also Nautilus.

Fulton (submarine), 227, 1902.

Launching. 185.

Trials, 200.

Holland patents, 125.
Holland submarine, 73, 80, 83, 84, 87, 88, 99, 100,
101, 104, 114, 124, 125, 127, 139, 145, 157, 165,
176, 179, 193, 195, 198, 225, 311, 547, 569, 847,
1366, 1394, 1395, 1398, 1399, 1401, 1403, 1407.
Compared with Narval, 1398,

Compared with Nordenfeldt, 1387.
Personnel, 1391.

Holland type, 235, 316, 323, 569, 758.

Compared with Lake type, 239, 314, 316, 328, 356.
Honolulu. 935, 973.

Horstford submarine, 203.

Horton, Commander, 1047.

Housatonic, 130.

Holland, Trials, 114, 117, 146, 157, 180, 316, 1390,

1391.

Holland Boat Company, 185, 417, 569, 1390, 1394.

Jack-Doxford balanced pressure system, 1181.
Jacket, 643.

Jaubert, George F., Patent granted to, 578.
Jefferson, Thomas, 18.
"Jitney," 775.

L. A. Submarine Boat Company, 855.

Lake, Simon, 103, 115, 121, 134, 167, 247, 677, 826,
950, 975, 995, 1007, 1155, 1189, 1296, 1340.
Biography, 115, 333, 1145, 1335.
Portrait, 103, 130, 1145, 1335, 1361.
Lake submarine, Specifications, 394.

Lake type, 225, 235, 266, 267, 280, 311, 354, 367,
394, 406, 622, 705, 1407.

Compared with Holland. See Holland type: Com-
pared with Lake type.

First for United States, 622.
Landskrona, Sweden, 58, 1383.
Lanphier, C. R., 984.

La Rochelle, Battle of, 22, 544.

Laubeuf, Alfred Maxime, 368, 408, 949, 998.

Laubeuf type, 551, 648, 758, 827.

Built in United States, 1140.

Trials, 401.

127

See also Propulsion; Engines, Gas and oil; Motors;

Storage batteries.

McWhorter, Lieut., 1371.

Magnets, Lifting, 849.

Man shot from torpedo tube, 1229.
Manoeuvres, 276.

French, 237, 438, 460, 559, 594.
Manoeuvring power, 181, 240, 860.
Maps, 146.

Mariotte, 487, 571.

Sinking, 966.

Mathematical analysis of form, 91.

Maxim, Hudson, Inventions of, 910, 1160.
Melville, George Wallace. 169.
Mercer-Fraser Company, 1327.
Merchant Submarine Company, 1296.
Merchant submarines, 1050, 1297.

Lake's, 1155, 1284, 1296, 1315, 1340.
See also Bremen; Deutschland.
Mersenne, Marin, 10.

Microphone, 898, 1329, 1511, 1513, 1520, 1539, 1542.
Middle West, Attitude on submarine warfare, 1112.
Middleton system, 261.

Mine layers, 632, 997, 1063, 1081, 1082, 1115, 1169,
1170.

Capture of, 1042.

Bibliography, 2.

Mingoa, Accident to, 756.

Mirrors, 1116.

Moccasin, 255, 1400, 1404.

Trials, 218, 226, 229, 255, 256.

Model of submarine, 303, 443, 591, 1101.
Monturiol, Narciso, Biography, 819.

Monturiol submarine, 825.

Moriarty submarine, 225, 1401, 1402.

Morse, Trials of, 1396.

Mother ship. See Supplies for submarines.
Motion, 181, 332, 946.

Motors, 151, 190, 193, 306, 382, 383, 387, 397, 576,
579, 635, 784, 795, 817, 853, 855, 1025.
Atmospheric, 152.

Illustrations, 349.

Moving pictures. See Photography, Submarine.
Murray, Arthur, 1403.

Musoforiti system, 1204, 1236, 1306.

N-type, 1286.

Names of submarines:

N

American, 990, 1273, 1458, 1490.
French, 1431.

Nantucket, Attack off, 1029, 1080, 1112.

Napoleon, 1161.

Narval, 399.

Trials, 1396.

M-1, 823.

Specifications, 673.

Trials, 1002.

M

Narvalo, 427.

Narwahl, 457, 463.

Nautilus, 191, 206, 238, 452, 496, 903, 1161, 1188,
1211.

Naval affairs, German, 664, 688, 700, 723, 740, 741,
744, 836, 915, 980, 981, 1017.

Navigation, Submarine, 9, 10, 27, 29, 75, 92, 111,
118, 135, 148, 172, 183, 233, 235, 259, 263, 287,
301, 305, 391, 776, 820.

Navigation of submarines. 42. 103, 150, 160, 190,
208, 250, 256, 263, 272, 283, 286, 288, 557, 762,
780, 808, 816, 854, 872, 877, 895, 896, 926, 999,
1099, 1106, 1122, 1205, 1264, 1266, 1344, 1361.
Instruments, 1099.

Navy, Submarine development of, 74, 175, 186, 208,
221, 232, 266, 287, 288, 296, 335, 345, 355, 386,
436, 447, 471, 493, 525a, 610, 664, 678, 693, 710,
711, 862, 891, 939, 998, 1109, 1208, 1420, 1429,
1436.

Propulsion, 15, 25, 133, 150, 190, 362, 387, 430, 439,
451, 472, 482, 511, 557, 610, 635, 636, 649, 719,
721, 746. 781, 791, 854, 855, 896, 938, 953, 957,
1032, 1240, 1280.

By compressed air, 905, 1006, 1121, 1122.

By electricity, 60, 69, 487, 494, 519, 1332.

By electricity, First use of, 1015.

By fins, 24, 261.

By manual power, 746.

By oars, 12.

By steam, 54, 69, 543, 719, 959, 963.

By steam, compared with Diesel engines, 719, 959,
963.

By storage batteries. See Storage batteries.
Neff system. See Propulsion: By compressed air.
When submerged, 901, 1227, 1240.

See also Engines, Gas and oil.

Protection against submarines. See Defense against

submarines.

Propagation under water, 1509, 1510, 1521.

Transmission through water, 822, 1509, 1510, 1516,
1540, 1541.

Velocity, 1505.

Sound of submarines, 817.

Spanish boats at battle of La Rochelle, 22.

Spear, Lawrence Y., Inventions of, 430.
Specifications, 327, 343, 394, 495, 517, 1500.

Speed, 180, 315, 320, 332, 406, 453, 535, 970.
Submerged, 406, 472, 487, 511, 708.
Surface, 487.

Sperry, Elmer Ambrose, 1067.

Spezia, 426, 427, 440, 456, 589.

Sponge gatherer, 407, 414, 419, 420, 422, 423, 425.
Squalo, 390, 432.