434 



INDEX. 



Beccaria, Father G., on atmospheric 



electricity, 306 



Becquerel, Antoine Cesar ; on atmo- 

 spheric electricity, 307 

 on diamagnetism, 339 

 Becquerel, Edmond, on photo-voltaic 



currents, 389 

 Becquerel, Henri, on magneto-optic 



rotation, 387 



Bell, Alexander Graham, his Tele- 

 phone, 435 



. The Photophone, 389 

 Bells, electric, 432 

 Bennet's Doubler, 23 



Electroscope, 13, 25 

 BertscJis Electric Machine, 45 

 Best grouping of cells, 351 

 Bichromate Battery, 165 

 Bifilar Suspension, 118, 262, 336 

 Biot, Jean Baptiste, Experiment with 



hemispheres, 30 

 Law of magnetic distribution, 



138 



on atmospheric electricity, 307 

 Bismuth, diamagnetic properties of, 



87, 313, 339 



Blasting by electricity, 286, 370 



Blood, diamagnetism of, 339 



Boracite, 67 



"Bound" electricity, 24, 149 (foot- 

 note) 



Boltzmann, on Dielectric capacity, 

 270, 271, 390 



Boyle, Hon. Robert, on electrical 

 attraction, 2 



Branched circuit, 353 



Breaking a magnet, 106 



Breath-figures, 297 



Bridge, Wheatstpne's, 3^8 



British Association Unit, 323, 364, 



365- 



jBrugtnans discovers magnetic repul- 

 sion of bismuth, 339 



Brush discharge, 290 



Brush's dynamo-electric machine, 411 



Bunsen's Battery, 172 



CABLE, Atlantic, 274 (footnote), 275, 



296, 429 

 submarine, 429 



,, as condenser, 274, 



296, 430 



Cabot, Sebastian, on magnetic de- 

 clination, 136 



Cailletet on resistance of air, 291 

 Calibration of Galvanometer, 198 



Callaris Battery', 172 

 Callauds Battery, 176 

 Canton, John, discovers Electrostatic 

 Induction, 18 



on Electric Amalgam, 41 

 Candle, electric, 373 

 Capacity, definition of, 246 

 measurement of, 362 

 of accumulator or condenser, 



50, 267, 277 



of conductor, 37, 47, 247, 277 

 of Leyden Jar, 50, 267 

 specific inductive, 21, 49, 268, 



272 



unit of (electrostatic), 247 

 unit of (practical), 276"" 

 Capillary Electrometer, 225, 265 

 Carnivorous Plants, sensitive to elec- 

 tricity, 230 

 Carrt, F. , Dielectric machine, 45 



on magnets of cast metal, 97 

 Cascade arrangement of Jars, 279 

 Cautery by electricity, 369 

 Cavallo Tiberius, his attempt to 



telegraph, 423 

 his pith-ball electroscope, 3 

 on a fireball, 304 

 on atmospheric electricity, 302, 



306 



Cavendish, Hon. H., on Specific 



Inductive capacity, 268, 269 



on nitric acid produced by 



sparks, 286 

 Ceca, Father, on atmospheric elee- 



tricity, 306 

 Cell, voltaic, 152 

 Charge, electric, 7 



resides on surface, 27 

 residual of Leyden Jar, 53, 272 

 Chart, magnetic, 136, 169 

 Chemical actions in the battery, 159 

 laws of, 166, 211, 417 

 of spark discharge, 286 

 outside the battery, 205, 412 

 Chemical test for weak currents, 218, 



286 



Chimes, electric, 43 

 Chronograph, electric, 433 

 Circuit, 152 



simple and compound, 181 

 Clark's (Latimer) standard cell, 177 

 Claiisius, R., theory of Electrolysis, 



418 



Cleavage, electrification by, 60 

 Clocks, electric, 433 

 Cobalt, magnetism of, 86 

 Coefficient of Magnetic induction, 89, 



3*3 

 of mutual induction, 397 



