recautions and devices against, 345, 346, 355, 361;
requirements of modern, 307-317

Sweden, submarine strength of, 306, 307

Switzerland, 150

T

Taube, 126

Thaw, Lieutenant William, 214

Tissot, Professor, 357

Torpedo chamber, 320;
plane, 156, 157;
tubes, 298, 301, 303-306, 312, 315, 317, 320, 353

Trocadero, 49-51

Tulasne, Major, 196, 199

Turkey, submarine strength of, 307

Turkish, 177, 188, 334

U

U-53, 12, 206, 353, 354

U-Boat attacks on, allied merchantmen;
_Amiral Ganteaume,_ 340;
_Gulflight_, 343;
_Lusitania_, 193, 210, 263, 343;
_Laconia_, 347-351;
_Strathend_, 354;
_West Point_, 354;
_Stephano_, 354;
_Bloomersdijk_, 354;
_Christian Knudsen_, 354;
in general, 346-354

United States, 56-58, 81, 91, 94-96, 103, 107, 111, 120, 142, 158,
166, 180, 182, 185, 187, 193, 194, 200, 202, 209, 221, 228, 230,
239, 260, 261, 271, 295, 297, 301, 303, 310, 334, 341, 343, 345,
361, 364, 365, 381;
government of, 96, 272, 273, 276, 296, 343;
declares war upon Germany, 342;
Navy, 297, 298, 300, 354;
submarine strength, 350

V

Vanniman, 57, 159

Vaux, 162

Venice, 108

Verdun, 6, 55, 161, 162

Verne, Jules, 40, 262, 287

Vickers, gun, 217;
scout airplane, 126, 131, 147, 164

Vicksburg, 6

Viney, Lieutenant, 191

von Bernstorff, Count, 353

W

Wanamaker, Rodman, 160

War, Department of, 101;
Secretary of, 187, 194, 222

War zones, 341, 342

Warneford, sub-Lieutenant R. A. J., 164, 165, 214

Washington, D. C., 96, 97, 204

Washington, General George, 247

Watt, James, 19

Weddigen, Captain, Otto von, 236, 305, 334

Wellington, 108

Wellman, Walter, 56, 57, 159

White, Claude Graham, 128

Whitehead torpedo, 261, 262, 264, 266

Wilhelmshaven, 132, 156, 157, 183, 195, 230, 353

Winslow, Carroll Dana, 111, 115, 116, 139

Woodhouse, Henry, 190

Wright Brothers, 14, 43, 58, 60, 64, 83, 84, 87, 89, 90-95, 97,
98, 109, 111, 183

Wright, Orville, 74, 75, 88, 99-102

Wright, Wilbur, 88, 91, 96, 97

Z

Zede, M. Gustav, 265, 266, 303

Zeebrugge, 8, 9, 150, 151, 153, 155, 195, 200, 230

Zeppelin, Count, von, 28, 34, 38, 50, 54, 59-65, 68-77, 79, 105, 362

Zeppelin, Eberhard, 64

Zeppelin disasters:
_Zeppelin I._, 66-69
_IV._, 66, 72
_L-I_,