V. Vessel _Destroyer_, Ericsson's torpedo, 160 ---- in the world, the fastest, 177 ---- _Uhlan_, the German torpedo, 158 Voltaic batteries, 79 ---- battery, Leclanché's, 77 ---- ----, Von Ebner's, 76 ---- ----, test for electro-motive force, 105 ---- ---- internal resistance, 104 ---- ---- potential, 104 ---- cell, definition and properties of a, 269 ---- current, the, 70 Von Ebner's high tension fuze, 36 ---- ---- Voltaic battery, 6 W. War, employment of fish torpedoes in, 133 ----, torpedo operations during the American civil, 189 ---- ---- Austrian, 192 ---- ---- Austro-Italian, 188 ---- ---- Crimean, 187 ---- ---- Franco-German, 192 ---- ---- Paraguayan, 191 ---- ---- Russo-Turkish, 192 ----, torpedoes during the American civil, 115 ---- ----, Russo-Turkish, 115 Warfare, defensive torpedo, 13 ----, elements of success in torpedo, 16 ----, science of torpedo, 15 ---- still in its infancy, offensive torpedo, 115 Wars, submarine mines in the Crimean and American, 27 Wear and tear of Siemens' electric light apparatus, 247 Welden railway saved by torpedoes, the, 190 Wheatstone's balance, 97 ---- ----, manipulation of, 99 ---- ----, measurement of resistances by, 98 Whitehead's fish torpedo, 133 ---- ----, adjustments of, 136 ---- ----, capabilities of, 134 ---- ----, methods of projecting, 138 ---- ----, mode of ignition of, 135 Wire fuze for conductivity, test of platinum, 101 ---- ----, test of resistance of platinum, 101 Wire fuzes, platinum, 33 ---- ----, English service, 33 ---- ----, McEvoy's, 34 Wires in McEvoy's spar torpedo, arrangement of, 155 Woolwich fish torpedo, the, 140 Y. Yarrow's torpedo boats, 172 ---- ----, English, 173 ---- ----, Spanish, 175 ---- ---- launch, description of a, 172 ---- ---- launches, Dutch, 172 ---- ----, Russian, 172 GRIFFIN AND CO., PUBLISHERS BY APPOINTMENT TO H.R.H. THE DUKE OF EDINBURGH, 2, THE HARD, PORTSMOUTH. PUBLICATIONS OF J. GRIFFIN & CO., Naval Publishers, (_By Appointment, to H.R.H. The Duke of Edinburgh_.) 2, THE HARD, PORTSMOUTH. LONDON AGENTS:--Simpkin, Marshall, and Co., London. THE DUEL: A NAVAL WAR GAME, Invented and arranged by CAPT. PHILIP H. COLOMB, R.N., with Explanations and Rules of the Game, and the necessary Scales, and large Drawing Block. Price 10s. 6d. "Captain Colomb's War Game will prove very useful to all Executive Officers. It will become the Naval Chess." "I think it will prove of much advantage to the Service. It will open the eyes of many men who have hitherto thought and talked of the subject perhaps intelligently but not accurately." TORPEDOES AND TORPEDO WARFARE: Offensive and Defensive.