Chapter XX: Appendix (2)

F.
Failure of offensive torpedoes, the, 8
Fastest vessel in the world, the, 177
Final Russian torpedo boat attack, the, 203
Firing batteries, 75
---- by cross bearings, 70
---- ---- intersectional arcs, 71
---- ---- observation, 69
---- ---- preconcerted signal, 71
---- Harvey's torpedoes, mode of, 121
---- keys, 80
---- ----, description of a series of, 81
---- ----, Morse, 81
----, mode of, 205
---- ----, in 1829, 6
---- Whitehead torpedoes, Thornycroft's method of, 140
Fish torpedo, adjustments of Whitehead's, 136
---- ----, description of the, 133
---- ----, invention and adoption of the, 131
---- ----, methods of projecting the, 138
---- ----, the mode of ignition of the, 135
Fish torpedoes in war, employment of, 133
---- ----, Thornycroft's method of firing, 140
---- ----, Woolwich, 140
Fisher's extempore high tension fuze, 37
Floating torpedoes, 116
Flotation experiment with a torpedo boat, 171
Fluid batteries, double, 274
---- ----, single and double, 272
Fluid cell, action in a single, 273
Force compared, explosive effect and, 204
----, definition of the term explosive, 204
----, electro-motive, 270
----, Voltaic battery test for electro-motive, 105
Forces, comparing electro-motive, 94
Fore and aft mooring, 56
Form of Lay's torpedo boat, an improved, 153
---- ---- torpedo case, 31
Fosberry's patent torpedo boat protective, 182
Frame torpedoes, 18
Frames, projecting, 111
Franco-German war, torpedo operations during the, 192
---- ----, torpedoes in the, 13
French submarine boat _Plongeur_, 185
---- torpedo launches, Thornycroft's, 165, 169
---- towing torpedoes, 131
Frictional electric machine, description of a, 278
---- electricity, 278
Fulminate of mercury, 215
Fulton, Robert, 2
Fulton's attempt against the _Argus_, 6
---- block ship, 5
---- cable cutters, 5
---- destruction of the _Dorothea_, 4
---- drifting torpedoes, 5
---- failures, 2
---- French torpedo experiments, 3
---- harpoon torpedoes, 5
---- practical experiments, 5
---- return to America, 4
---- spar torpedoes, 5
---- stationary submarine mines, 5
Fuzes, Abel's, 37
----, Beardslee's, 35
----, chemical, 23
----, defects of chemical, 24
----, electric, 33
----, extempore, 37
----, extempore, Fisher's, 37
---- for conductivity, test of platinum wire, 101
----, high tension, 34
----, improved form of Jacobi's, 24
----, McEvoy's percussion, 24
----, percussion, 23
----, platinum wire, 33
----, ----, English service, 33
----, ----, McEvoy's, 34
----, sensitive, 23
----, Statham's, 35
----, test of resistance of platinum wire, 101
----, testing high tension, 102
----, Von Ebner's, 36

G.
Galvanometer, astatic, 87
----, detector, 88
----, differential, 88
----, tables, Siemens' universal, 287
----, thermo, 89
----, Thomson's reflecting, 87
----, three coil, 88
----, universal, Siemens', 89
Generating electricity, methods of, 269
German torpedo vessel _Uhlan_, the, 158
Gun, the Nordenfelt torpedo, 257
----, Hotchkiss torpedo, 259
Gun-cotton, 212
Gunpowder, 208
Guns, torpedo, 257
Gutta-percha as a dielectric, 38

H.
Harbours by booms, defence of, 110
Harpoon torpedoes, Fulton's, 5
Harvey's towing torpedo, 119
---- ----, brakes for, 123
---- ----, buoys for, 122
---- ----, for defensive purposes, 129
---- ----, launching, 123
---- ----, methods of attack with, 127
---- ----, mode of firing, 121
---- ----, tactics with, 127
---- ----, the value of, 129
Helmet for divers, 260
Herreshoff's torpedo boats, 178
High tension fuzes, 102
Hooper's electric cables, 41
---- material, 39
Horsley's powder, 216
Hotchkiss torpedo gun, the, 259

I.
Ignition, Bushnell's mode of, 2
---- of Whitehead's fish torpedo, mode of, 135
Illustrated torpedo explosions, 218
Improved form of Lay's torpedo, an, 153
India rubber tube joint, the, 45
Inertia circuit closer, Mathieson's, 61
---- ----, improvements in, 63
Instrument and observing telescope, shutter, 84
Instruments used in testing, 85
Insulated electric cables, 38
---- joints, electrical test of, 104
Insulation, sea cell tests for, 106
---- test for electric cables, 102
Insulators, 268
Intensity of a current, measuring the, 95
Internal resistance, Voltaic battery test for, 104
Intersectional arcs, firing by, 71
Invention and adoption of the fish torpedo, the, 131
Italian torpedo launches, Thornycroft's, 168

J.
Jacobi's fuze, improved form of, 24
Jar, the Leyden, 279
Jointing electric cables, 44
Joints, Beardslee's, 46
----, electrical test of insulated, 104
----, india rubber tube, 45
----, Mathieson's, 45
----, McEvoy's, 46
----, Nicholl's metallic, 45
----, rules to be observed in forming, 51
----, Siemens' permanent, 47
_Jones_, the loss of the _Commodore_, 189
Junction boxes, 51
---- ---- for multiple cables, 52
---- ---- single cored cables, 52
---- ----, T, 53

K.
Keys, firing, 80
---- ----, description of a series of, 81
---- ----, Morse, 81
Kiel, torpedo experiments at, 222
Knowledge, theoretical, 8

L.
Ladder for divers, 261
---- mooring, 55
Lamps, automatic electric, 248
----, Siemens' patent electric, 248
Land service cables, 43
Launch, description of a Yarrow torpedo, 172
---- for placing moorings, steam, 58
Launches, Thornycroft's torpedo, 163
---- ---- Austrian and French torpedo, 165
---- ---- Dutch and Italian torpedo, 168
---- ---- French torpedo, 169
---- ---- Norwegian torpedo, 163
---- ---- Swedish and Danish torpedo, 165
----, Yarrow's Dutch torpedo, 173
---- ---- Russian torpedo, 172
Launching Harvey's torpedo, mode of, 123
---- Lay's torpedo boat, 147
Law, the application of Ohm's, 276
Lay's torpedo boat, 141
---- ----, an improved form of, 153
---- ----, capabilities of, 147
---- ----, launching, 147
---- ----, method of sinking and raising, 149
---- ----, used as a tug, 150
---- ----, in clearing obstructions, 151
---- ----, to clear away mines, 152
Leclanché's Voltaic battery, 77
Lewis's drifting torpedo, 117
Leyden jar, the, 279
Light, Siemens' electric, 241
---- ----, conducting wires for, 247
---- ----, concentration of, 251
---- ----, precautions in manipulating, 252
---- ----, rotation of armatures in, 246
---- ----, wear and tear of, 247
----, the electric, 239
---- ----, application of, 256
_Lightning_, Thornycroft's torpedo boat, 168
Lithofracteur, 216
Locomotive torpedoes, 131
Loss of the _Cairo_, 189
---- ---- _Commodore Jones_, 189

M.
Machine, description of a frictional electric, 278
----, Siemens' low tension dynamo-electric, 75
Machines, methods of coupling dynamo-electric, 254
Magnet, the electro, 281
Magnetism, 279
Magneto circuit closer, McEvoy's weight, 66
Magnets, permanent, 280
Main system, McEvoy's single, 283
Manipulation of Wheatstone's balance, the, 98
Marié-Davy battery, description of the, 275
Matchin, Russian torpedo boat attack at, 196
Material, Hooper's insulating, 39
Mathieson's cement safety plug, 21
---- circuit closer, inertia, 61
---- ----, improvements in, 63
---- ----, spiral spring, 63
---- joint, 45
McEvoy's drifting torpedo, 118
---- duplex spar torpedo, 154
---- improved Singer's mine, 20
---- joint, 46
---- mechanical mine, 22
---- ---- primer, 21
---- ---- Turk's head, 53
---- mercury circuit-closer, 65
---- papier maché safety plug, 22
---- percussion fuzes, 24
---- platinum wire fuzes, 34
---- single main system, 283
---- weight magneto circuit-closer, 66
Measurement of resistance by Wheatstone's balance, 98
Measuring electrical resistances, 93
---- the intensity of a current, 95
Mechanical mines, 10, 16
---- ----, advantages of, 17
---- ----, best kinds of, 17
---- ----, extempore, 21
---- ----, for coast defence, 16
---- ----, in the American war, 16
---- ----, McEvoy's, 22
---- ---- improved Singer's, 20
---- ----, mooring, 26
---- ----, Russian electro, 68
---- ----, Singer's, 19
Mechanical primer, Abel's, 23
---- ----, McEvoy's, 21
---- tests, 85
Medway, experiments with countermines in the, 236
Menotti cell, description of the, 78
---- test batteries, 79
Menzing's towing torpedo, 130
Mercury circuit-closer, McEvoy's, 65
----, fulminate of, 215
Metallic joint, Nicholl's, 45
Method of carrying fish torpedoes, Thornycroft's, 140
---- ---- sinking and raising Lay's torpedo, 149
---- ---- testing, the Austrian, 109
Methods of attack with Harvey's torpedoes, 121
---- ---- coupling dynamo-electric machines, 254
---- ---- generating electricity, 269
---- ---- protecting ships against torpedo attacks, 180
---- ---- projecting Whitehead's fish torpedo, 135
Mines, submarine, electrical, 10, 27
---- ----, advantages of, 28
---- ----, defects of, 29
---- ----, mooring, 54
---- ----, in the American war, 27
---- ----, electro-contact, circuit-closers for, 63
---- ----, Fulton's stationary, 5
---- ----, mechanical, 10, 16
---- ----, advantages of, 17
---- ----, extempore, 21
---- ----, McEvoy's, 22
---- ----, improved Singer's, 20
---- ----, mooring, 26
---- ----, Russian electro, 68
---- ----, Singer's, 19
---- ----, rules to be observed in planting, 74
---- ----, sweeping for, 112
Mixtures, explosive, 208
Mode of firing Harvey's torpedoes, 121
---- ----, in 1829, 6
Monitor _Duba Saife_, destruction of the Turkish, 197
Mooring, Austrian method of, 56
---- electrical submarine mines, 54
----, fore and aft, 56
----, ladder, 55
----, launch for placing, 58
Mooring mechanical mines, 26
----, single rope, 56
Morse firing keys, 81
Multiple cables, 43
---- ----, junction boxes for, 52

N.
Nicholl's metallic joint, 45
Nitro-glycerine, 209
Nordenfelt torpedo gun, the, 257
Norwegian torpedo launches, Thornycroft's, 163

O.
Observation, firing by, 69
---- ----, Prussian system of, 73
Observing telescope, shutter apparatus and, 84
Obstructions, destruction of passive, 113
----, Lay's torpedo in clearing away, 151
Offensive torpedo operations, Russian and Turkish, 195
---- ---- warfare still in its infancy, 115
---- torpedoes, failure of, 8, 11
---- ----, general remarks on, 156
Ohm, definition of the, 281
Ohm's law, application of, 276
Operations, torpedo, 187
---- ----, during the American civil war, 189
---- ---- Austrian war, 192
---- ---- Austro-Italian war, 188
---- ---- Crimean war, 187
---- ---- Franco-German war, 192
---- ---- Paraguayan war, 191
---- ---- Russo-Turkish war, 192
---- ---- defensive, Russian, 193
---- ----, Turkish, 193
---- ---- offensive, Turkish and Russian, 195
Ordinary type of torpedo boat, the, 179
Ottoman fleet, cause of failure of the, 14
Outrigger torpedoes, spar or, 154

P.
Papier maché safety plug, McEvoy's, 22
Paraguayan war, torpedo operations during the, 191
Passage through torpedo defences, clearing a, 111
Passive obstructions, destruction of, 113
Patent electric lamp, Siemens', 248
---- torpedo boat protective, Fosberry's, 182
Percussion fuzes, 23
---- ----, McEvoy's, 24
Permanent joint, Siemens', 47
---- magnets, 280
Physical state of the explosive substance, the, 204
Picric powder, 209
Planting submarine mines, rules to be observed in, 74
Plates, Brown's arrangement of earth, 100
----, connections of switch, 100
Platinum wire fuze for conductivity, test of, 101
---- ----, test of resistance of, 101
---- ---- fuzes, 33
---- ----, English service, 33
---- ----, McEvoy's, 34
_Plongeur_, French submarine boat, 185
Plug, Mathieson's cement safety, 21
----, McEvoy's papier maché safety, 22
Pola, torpedo experiments at, 231
Polarization, definition of the term, 273
Porter's torpedo ship _Alarm_, Admiral, 159
Portsmouth, torpedo experiments at, 229, 233
Potential, definition of, 270
----, Voltaic battery test for, 104
Powder, Horsley's, 216
----, picric, 209
Precautions in manipulating the electric light, 252
Primer, Abel's mechanical, 23
----, McEvoy's, 21
Projecting frames for torpedo ship defence, 111
---- Whitehead's fish torpedo, methods of, 138
Propeller, Thornycroft's screw, 170
Properties of a Voltaic cell, definition and, 269
Prussian system of firing by observation, the, 73

Q.
Quadrant electrometers, Thomson's, 86
Qualifications essential to submarine boats, the, 184

R.
Rain's detonating composition, 23
Reflecting galvanometer, Thomson's, 87
Reflector, Colt's, 7
Remarks on offensive torpedoes, general, 156
Resistance boxes, 97
---- of cables, test of electrical, 104
---- platinum wire fuze, test of, 101
----, Voltaic battery test for internal, 104
Resistances by Wheatstone's balance, measurement of, 98
----, circuit, 276
----, measuring electrical, 93
Rheostat, the, 96
Rope mooring, single, 56
Rotation of armatures in Siemens' electric light apparatus, 246
Roux and Sarrau, experiments by, 207
Rules in connection with submarine mines, 29
---- to be observed in forming cable joints, 51
---- ---- planting mines, 74
Russian and Turkish offensive torpedo operations, 194
---- defensive torpedo operations, 193
---- electro-mechanical mines, 68
---- torpedo boat attack at Batoum, 115, 202
---- ---- Matchin, 196
---- ---- Rustchuk, 200
---- ---- Soukoum Kaleh, 201
---- ---- Soulina, 198
---- ---- off the Aluta, 200
---- ----, the final, 203
---- ---- boats, Schibau's, 178
---- ---- launch, Yarrow's, 172
---- torpedoes, 193
Russo-Turkish war, torpedo operations during the, 192
---- ----, torpedoes during the, 14, 115
Rutschuk, Russian torpedo attack at, 200

S.
Safety cock arrangement, Steward's, 25
---- plug, Mathieson's cement, 21
---- ---- McEvoy's papier maché, 22
Schibau's Russian torpedo boats, 178
Science of torpedo warfare, the, 15
Sea cell test for insulation, 106
---- ---- tests, 100
---- service cables, 43
Second class torpedo launches, Thornycroft's, 169
Self-acting circuit closer, the Austrian, 64
Sensitive fuzes, 23
Service cables, land, 43
---- ----, sea, 43
---- platinum wire fuze, English, 33
Ship _Alarm_, Admiral Porter's torpedo, 159
---- defence, 10
----, Fulton's block, 5
Ships against torpedo attacks, methods of protecting, 180
----, employment of torpedo, 158
Shunt, definition of a, 95
---- for Siemens' electric light, self-acting, 245
Shutter apparatus, firing keys and, 80
---- ----, the, 82
---- used with a circuit breaker, 83
---- instrument and observing telescope, 84
Siemens' electric cables, 40
---- ---- light apparatus, 241
---- ----, conducting wires for, 247
---- ----, description of, 241
---- ----, power and light produced by, 244
---- ----, rotation of armatures in, 246
---- ----, self-acting shunt for, 245
---- ----, wear and tear of, 247
---- low tension dynamo machine, 75
---- patent electric lamp, 248
---- permanent joints, 47
---- universal galvanometer, 89
---- ---- tables, 287
Signal, firing by preconcerted, 71
Signals employed in diving, 263
Silvertown electric cables, 41
Singer's mechanical mine, 19
---- ----, McEvoy's improved, 20
Single and double fluid batteries, 272
---- cored armoured cables, 43
---- ---- unarmoured cables, 43
---- fluid cell, action in a, 273
---- main system, McEvoy's, 283
---- rope moorings, 56
Size of torpedo charges, 218
Soukoum Kaleh, Russian torpedo attack at, 201
Soulina, Russian torpedo attack at, 198
Spanish torpedo boats, Yarrow's, 175
Spar or outrigger torpedoes, 154
---- torpedo, McEvoy's duplex, 154
---- torpedoes, Fulton's, 5
Special cables, 43
Spherical shaped torpedo case, the, 32
Spiral spring circuit closer, Mathieson's, 63
Stake torpedoes, 18
State of the explosive substance, the physical, 204
Statham's high tension fuze, 35
Stationary mines, Fulton's, 5
Steward's safety cock arrangement, 25
Stokes Bay, experiments with countermines at, 236
Submarine boat, Bushnell's, 2, 184
---- ----, Confederate, 185
---- ----, French, 185
---- boats, 183
---- ----, qualifications essential to, 184
---- mines 13
---- ----, during the Crimean and American wars, 27
---- ----, rules for using, 29
---- ----, sweeping for, 112
---- ----, electrical, 27
---- ----, advantages of, 28
---- ----, defects of, 29
---- ----, mooring, 54
Submersion, tests after, 106
Success in torpedo warfare, elements of, 16
_Suna_, destruction of the Turkish vessel, 194
Swedish torpedo launch, Thornycroft's, 165
Sweeping for submarine mines, 112
Switch plates, commutators or, 96
---- ----, connections of, 100
Synopsis, 290
System, McEvoy's single main, 283
---- of electrical testing, Armstrong's, 107
---- ---- firing by observation, Prussian, 73
---- ---- tests, object of, 84

T.
T junction box, the, 53
Table, the Austrian testing, 108
Tables, Siemens' universal galvanometer, 287
----, test, 99
Tactics with Harvey's torpedoes, 127
Telegraph batteries, 79
Telescope, shutter instrument and observing, 84
Tension dynamo machines, Siemens' low, 75
---- fuses, testing high, 102
Term torpedo, definition of the, 115
Terms electro-positive and electro-negative, the, 271
Test battery, the Menotti, 79
----, discharge, 103
---- for electrical cables, insulation, 102
---- of electrical resistance of cables, 104
---- ---- insulated joints, electrical, 104
---- ---- platinum wire fuze for conductivity, 101
---- ---- resistance, 101
---- tables, 99
Testing, Armstrong's system of electrical, 107
----, Austrian method of, 109
---- high tension fuzes, 102
----, instruments used in, 85
---- table, Austrian, 108
Tests after submersion, 106
----, electrical, 85
---- for insulation, sea cell, 106
----, mechanical, 85
----, object of a system, 84
----, sea cell, 100
Theoretical knowledge of torpedoes, 8
Theory of detonation, the, 206
---- ---- electricity, the, 265
Thermo galvanometer, the, 89
Thomson's quadrant electrometer, 86
---- reflecting galvanometer, 87
Thornycroft's boat engines, efficiency of, 171
---- method of carrying fish torpedoes, 140
---- propeller, 170
---- torpedo launches, 163
---- ----, Austrian and French, 165
---- ----, Danish and Swedish, 165
---- ----, Dutch and Italian, 168
---- ----, French, 169
---- ----, Norwegian, 163
---- ----, second class, 169
Three coil galvanometer, 88
Torpedo attacks, boat, 180, 191
---- ----, methods of protecting ships against, 180
---- boat, Lay's, 141
---- ----, capabilities of, 147
---- ----, an improved form of, 153
---- ---- attack, Russian, at Batoum, 195, 202
---- ---- ---- ---- Matchin, 196
---- ---- ---- ---- Rustchuk, 200
---- ---- ---- ---- Soukoum Kaleh, 201
---- ---- ---- ---- Soulina, 198
---- ---- ----, off the Aluta, 200
---- ---- ----, the final, 203
---- ---- experiment at Cherbourg, 170
---- ---- for flotation, 171
---- ---- _Lightning_, Thornycroft's, 168
---- ---- protective, Fosberry's patent, 182
---- boats, 162
---- ----, Herreshoff's, 178
---- ----, ordinary type of, 179
---- ----, Schibau's Russian, 178
---- ----, Yarrow's, 172
---- ----, description of a, 172
---- ---- Dutch, 172
---- ---- English, 173
---- ---- Russian, 172
---- ---- Spanish, 175
---- case, form and construction of, 31
---- ----, conical shaped, 32
---- ----, cylindrical shaped, 32
---- ----, spherical shaped, 32
---- charges, size of, 218
---- defences, clearing a passage through, 111
---- experiments at Carlscrona, 220, 224, 232
---- ---- Chatham, 220
---- ---- Copenhagen, 223
---- ---- Kiel, 222
---- ---- Pola, 231
---- ---- Portsmouth, 229, 233
---- ---- in Austria, 220
---- ---- England, 222
---- ---- Turkey, 232
---- explosive agents, 217
Torpedo guns, 257
---- ----, Hotchkiss, 259
---- ----, Nordenfelt, 257
---- invention and adoption of the fish, 131
---- launches, Thornycroft's, 163
---- operations, 187
---- ---- during the Austro-Italian war, 188
---- ---- Crimean war, 187
---- ---- Franco-German war, 192
---- ---- Paraguayan war, 191
---- ---- Russo-Turkish war, 192
---- ----, Russian defensive, 193
---- ----, Turkish defensive, 193
---- ---- and Russian offensive, 195
---- ship _Alarm_, Admiral Porter's, 159
---- ---- _Destroyer_, Ericsson's, 160
---- ---- _Uhlan_, the German, 158
---- ships, employment of, 158
---- spar, McEvoy's duplex, 154
---- ---- or outrigger, 154
----, the term, 115
---- warfare, defensive, 13
---- ----, elements of success, 16
---- ----, science of, 15
---- ---- still in its infancy, offensive, 115
----, Whitehead's fish, 133
---- ----, adjustments of, 136
---- ----, capabilities of, 134
---- ----, methods of projecting, 138
----, Woolwich fish, the, 140
----, American extempore drifting, 119
----, barrel, 19
----, Brook's, 19
----, Bushnell's drifting, 2
---- ----, invention of, 2
----, drifting, 116
----, floating, 116
----, frame, 18
----, Fulton's drifting, 5
---- ---- harpoon, 5
---- ---- spar, 5
----, general remarks on offensive, 156
---- in war, the employment of fish, 133
----, Lewis's drifting, 117
----, locomotive, 131
----, McEvoy's drifting, 118
----, moral effect of, 9
----, offensive, 11
---- ----, failure of 8
----, stake 18
----, towing 119
---- ----, French, 131
---- ----, Harvey's, 119
---- ----, methods of attack with, 127
---- ----, the value of, 129
---- ----, Mensing's, 130
----, turtle 19
Turkey, torpedo experiments in, 232
Turkish defensive torpedo operations, 193
---- monitor _Duba Saife_, destruction of the, 197
---- offensive torpedo operations, 195
---- ship _Suna_, loss of the, 194
---- torpedoes, 193
---- war, torpedoes during the Russo-, 115
Turk's head, McEvoy's mechanical, 53
Turtle torpedoes, 19

U.
_Uhlan_, the German torpedo vessel, 158
Unarmoured cables, single cored, 43
Universal galvanometer, Siemens', 89
---- ----, tables, 287
Use of circuit closers, the, 60

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

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SEA TERMS AND PHRASES.

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OUR PERIL AFLOAT;

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