• A
• Acoustic figures, 117
• Alpine adventures of Professor Tyndall, 60
• Alps, accidents on, 65
• America, electrical discoveries in, 231;
• first line of telegraph in, 273;
• telegraph in (see Morse and Telegraph);
• visit of Professor Tyndall to, 74
• Ampère’s electrical discoveries, 91;
• proposed telegraph, 134
• Aqueous vapour and radiant heat, 44
• Arago’s electrical discoveries, 91
• Atlantic cable, 193, 276, 292
• Automatic telegraph, Wheatstone’s, 199
• B
• Bain, Alexander, inventions claimed by, 160, 185, 305
• Baltimore and Washington telegraph, 273
• Batteries described—Volta’s, 88;
• Grove’s, 89;
• Daniell’s, 128
• Beer disease, 53
• Bible descriptions of nature, 6
• Biographies, use of, xi., xiv.
• Blackwall telegraph, 167, 173
• Brewster, Sir David’s account of first telegraph, 150;
• on vision, 210;
• improvement of stereoscope, 212
• Bridge, Wheatstone, 164
• Bryant, W. Cullen, on Morse and his telegraph, 252, 316
• C
• Cables, earliest, 187, 269, 292
• Calorescence, 47
• Carlyle, Thomas, reminiscences of, 99
• Celtic genius and science, 7
• Channel cable, first, 187, 191
• Charges for telegraphing, 181
• China, telegraph to, 317
• Clark, Latimer, on first English telegraph, 152;
• on Wheatstone’s single-needle telegraph, 167;
• on Wheatstone’s works, 229
• Clock, Wheatstone’s electro-magnetic, 160
• Clouds, experiments in producing, 49
• Concertina, invention of, 120
• Congress, American, and telegraph, 263, 270
• Cooke, W. F., account of his first connection with telegraph, 150, 152;
• dispute with Wheatstone about telegraph, 134, 138, 146;
• efforts to extend telegraph, 173;
• formation of Electric Telegraph Company, 183
• Cruikshank, George, on first telegraph, 141
• Cryptograph, invention of, 219
• Crystals, formation of, 96;
• magnetic properties of, 24
• D
• Daniell, Professor, on Wheatstone’s first telegraph, 149
• Daniell’s constant battery, 128
• Day, Professor J., electrical lectures, 234
• Dial telegraphs, Wheatstone’s, 158, 196
• Diamagnetism discovered, 23;
• investigated by Tyndall and others, 24, 29, 33
• Dynamic radiation of heat, 43
• Dynamo machine, invention of, 206
• E
• Earth as return circuit, 171;
• rotatory motion, 217
• Earth’s magnetic force, 26
• Electric currents, measurement of, 93, 163
• Electric telegraph. See Telegraph.
• Electric Telegraph Company, formation of, 183
• Electrical biographies, use of, xi.
• Electrical heat and light, 89
• Electricians, distribution of, xii., 231
• Electricity, production of, 22, 88, 91, 94, 232;
• force of, 163;
• velocity of, 93
• Ellsworth, Miss, connection with Morse telegraph, 272, 277
• Enchanted lyre, Wheatstone’s, 111
• Evolution, early days of Darwinian theory of, 97
• Exploder, Wheatstone’s, 186
• Explosion of mines by electricity, 185
• F
• Faraday’s associations with Professor Tyndall, 26, 30, 102;
• electrical and magnetic discoveries, 23;
• lecture on scientific theories, 32;
• on Wheatstone’s telegraph, 198
• Forbes, Professor J. D., on glaciers, 37, 40
• Frankland, Dr., associated with Professor Tyndall, 15;
• glacier theory by, 45
• G
• Gale, Professor, assisted Morse with telegraph, 249
• Gases, radiation and absorption of heat by, 42;
• sounding power of, 58
• Gauss and Weber’s telegraph, 136
• Germ theory, 51, 98
• German scientists, 21, 27
• Germany, science in, between 1840 and 1850, 16;
• student life in, 17;
• telegraph in, 136
• Glacier phenomena, 38
• H
• Harmonium, Wheatstone’s improvements in, 123
• Heat, radiant, investigation of, 42, 58
• House, R. E., printing telegraph by, 306
• I
• Induced electricity, discovery of, by Faraday, 22
• Inventions, popular accounts of origin of, 167;
• Morse’s definition of, 280;
• public appreciation of, 281, 302
• Irish scientists, 7
• J
• Jackson, Dr., disputes with Morse origin of telegraph, 244, 256
• K
• Kaleidophone, 117
• L
• Light, velocity of, 125
• Lightning conductors, 131
• Longitude determined by telegraph, 287
• M
• Magnetic attraction, 28
• Magnetic exploder, 186
• Magnetisation of light, 93
• Magnetism and diamagnetism, 23, 29;
• of the earth, 26
• Magnetism and electricity, 22, 91
• Magnetism, mechanical theory of, 93
• Magneto-electric machine, Wheatstone’s, 159
• Magnets, interaction of, 91;
• lengthened by electricity, 92
• Marburg, student life in, 17
• Measurement of electric currents, Wheatstone’s plans for, 124, 163
• Metals, new, discovered by electric spark analysis, 127
• Microphone, first use of word, 119
• Morse alphabet, uses of, 307
• Morse, Professor S. F. B.:
• artist, how he became an, 236;
• success as, 243;
• why he ceased to be an, 279
• Atlantic cable, connection with, 276, 292
• birth and education of, 233
• Congress’s action towards, 263, 270
• death of, 320
• difficulties in constructing his telegraph, 246;
• in introducing it, 268, 281
• electrical studies, 234, 242, 244
• first line of telegraph constructed by, 273
• funeral of, 321
• honours conferred on, 308, 311
• Jackson, Dr., controversy with, 244, 256
• law-suits to protect patent rights, 303
• London visited by, 236, 295
• patents, 259, 265;
• defence of, 303
• pictures painted by, 237
• photography, early connection with, 266
• proscribed German student’s case, 253
• rewards of, 309, 313
• statue of, 315
• telegraph, distinguishing features of, 279;
• first conception of, 244;
• first public description of, 260;
• labours to improve, 247;
• practical working of, 260;
• public trial of, 268;
• refusal of, by American Government, 283;
• spread of, 284;
• uses of, 286;
• working of, 289
• trial of first telegraph line, 277
• submarine cable, first, 269, 276, 292
• N
• Needle telegraph, 143, 167
• Niagara visited by Prof. Tyndall, 75
• O
• Ohm’s work and theory, 140
• O’Shaughnessy, Dr., introduction of telegraph in India, 310
• P
• Palmerston, Lord, on telegraph, 194
• Pasteur’s experiments with germs, 52
• Photography, invention of, 266;
• introduction of, 211, 267
• Piz Morteratch, accident upon, 67
• Polarised light, Wheatstone’s experiments, 222
• Printing telegraph, Wheatstone’s, 161
• Proscribed German student, Morse’s account of, 253
• Pseudoscope, invention of, 216
• Q
• Queenswood College, 15
• R
• Railway mania of 1845, 13
• Recording telegraph, Morse’s, 277, 290;
• Wheatstone’s, 199
• Relay, first accounts of, 141, 249
• Resistance measurer, 163
• Return circuit, 171
• Revolution effected by electricity, ix.
• Revolving mirror, uses of, 124
• Rheostat, Wheatstone’s, 165
• Ricardo, J. L., connection with telegraph, 183
• Ronalds’s telegraph, 110
• Rosa, Monte, ascent of, 61
• Royal Institution, changes at, 84;
• lectures by Tyndall at, 30, 38, 87
• S
• Scientific attainments, recognition of, in England, 35
• Scientific discovery, the pursuit of, 79
• Sea-water, varying tints of, 56
• Semaphore telegraph, 180
• Slaty cleavage, 36
• Smoke respirator, invention of, 54
• Sound, transmission of, 56;
• Wheatstone on, 116
• Sounder, the Morse, 291
• Spectrum analysis of electric spark, 127
• Standards, electrical, 164
• Steinheil’s telegraph, 136
• Stereoscope, invention of, 210;
• improvement of, 212;
• principle of, 215
• Submarine cables, earliest experiments with, 187, 269, 276, 292
• T
• Tawell, murderer, apprehended by use of telegraph, 178
• Telegraph, adoption of, by public, 173, 283
• automatic telegraph of Wheatstone, 199
• cables, earliest, 189, 269, 292;
• illustration of working, 95
• charges for, 181
• dial, invented by Wheatstone, 158;
• improvement of, 196
• early forecasts of, 106;
• early achievements of, 173, 277, 284
• electro-magnetic, Morse’s, 248, 277, 290;
• Wheatstone’s, 158
• extension of, 173, 181, 284, 292
• history of, 134, 144, 153, 173, 244, 260, 282, 292
• idea and invention of, 105, 244
• longitude ascertained by, 287
• Morse’s recording, 244, 260, 280, 290
• needle, 143, 167
• origin of, 134, 138, 142, 150, 244, 292
• pedigree of, 108
• recording, 199, 246, 260, 268, 277, 290
• relay, 141, 249
• sounder, the Morse, 290
• Wheatstone’s first needle, 143;
• dial, 158;
• printing, 161;
• recording automatic, 199
• Telephone, first, 115
• Thermo-electric pile, 129, 205
• Thermometers, self-registering, 221
• Tyndall, Professor J.:
• ancestors of, 3
• anecdotes of, 34, 93, 97
• birth and education of, 4
• daring experiment by, 47
• description of, by George Ripley, 72
• diamagnetism, explanation of, 24, 29
• duty, sense of, 19
• endowments for scientific purposes, 80
• Faraday, associations with, 26, 30, 102
• Germany, student life in, 17, 21
• German scientific friends of, 21, 26
• investigation of diamagnetism, 24, 29;
• germs, 51, 98;
• glacier phenomena, 38;
• radiant heat, 42, 58;
• sea-water tints, 56;
• slaty cleavage, 36;
• sound, 56
• marriage of, 86
• Ordnance Survey joined, 9
• Pasteur, remarks on, 52
• pecuniary assistance declined by, 20, 102
• Presidential address to British Association, 81
• Professor of Natural Philosophy, appointed, 31
• radiant heat, on, 42, 58
• railway surveying by, 12
• reminiscences of Thomas Carlyle, 99
• Royal Institution, at, 30, 85
• scientific adviser to Trinity House, 102
• scientific examiner at Woolwich, 35
• smoke respirator, invention of, 54
• teaching at Queenswood College, 15;
• elsewhere, 96
• travels of, in the Alps, 60;
• at Vesuvius, 70;
• in America, 71, 74
• vindication of scientific education, 35.
• working habits, 12
• youthful studies, 8, 10, 21
• V
• Velocity of electricity, 93, 124;
• of light, 125
• Vesuvius, visited in 1868, 70
• Vision, Wheatstone’s elucidations of, 210
• Voltaic battery described, 88;
• discovered, 110
• W
• West, Benjamin, associated with Morse, 236
• Wheatstone, Professor Charles:
• birth of, 111
• bridge, 164
• cryptograph, 219
• death and funeral, 228
• deciphering secret document, 220
• dispute with W. F. Cooke about telegraph, 134, 138, 146, 153
• electricity, first studies in, 123
• enchanted lyre of, 111
• harmonium improvements, 123
• honours conferred on, 166, 226
• invention of chronoscope, 162;
• concertina, 120;
• cryptograph, 219;
• dynamo, 206;
• electric clock, 160;
• enchanted lyre, 111;
• kaleidophone, 117;
• magnetic exploder, 186;
• magneto-electric machine, 159;
• polar clock, 223;
• pseudoscope, 216;
• stereoscope, 210;
• telegraph, 134 (see Telegraph);
• thermometers, 221
• inventions, periodicity of, 223
• investigation of algebra, 224;
• Chladni figures, 117;
• earth’s motion, 217;
• mental philosophy, 117;
• musical instruments, 120;
• polarised light, 222;
• sound, 116, 118;
• submarine cables, 187;
• submarine explosions, 185;
• thermo-electric pile, 129, 205;
• tone, 224;
• vision, 210
• investigations, latest and incomplete, 224
• lightning conductors, opinions on, 131
• magnetic exploder, 186
• measurement of force of electric currents, 163
• originality of his telegraph, 134, 138, 144
• patents of, 142, 154, 160, 167, 196
• peculiarities of, 225
• Professor of Experimental Physics at King’s College, 123
• revolving mirror, 124
• speaking machines, improvements in, 117
• spectrum analysis of electric light, 127
• submarine cables, early experiments with, 187
• telegraph, diagram of first, 141;
• history of, 144, 153;
• origin of, 134, 138, 142, 153
• telegraphic instruments, automatic, 199;
• dial, 158, 196;
• needle, 141, 145, 167;
• printing, 161
• thermo-electric pile, 129, 205

RICHARD CLAY AND SONS, LONDON AND BUNGAY.