Joule, James, 265, 269 

 motor, 267 

 rotating motor, 266 

 Karass, T., 241, 244, 252, 254, 289 

 Kemp, K. T., 237, 241 

 King, W. James: The Development of 

 Electrical Technology in the 19th 

 Century: i. The Electrochemical 

 Cell and the Electromagnet, 231- 

 271. 2. The Telegraph and the 

 Telephone, 273-332. 3. The Early 

 Arc Light and Generator, 333-407 

 King's College, London, 289 

 Koenig's manemetric capsule, 319 

 Lacassagne, Joseph, 340, 342, 344 

 Lacassagne and Thiers' current regulator, 



344. 345 

 Ladd, William, 375, 380 



generator, 375, 379, 383, 386 

 Lalande, Felix de, 246 

 Lalande-Chaperon cell, 247 

 Laplace, Pierre Simon, 278 

 Leclanche, Georges, 247 



cell, 252, 253 

 Leeson, 245 

 Le Roux, F. P., 341, 356, 360, 362, 364, 



367 

 Leipzig-Dresden railway, 284 

 Leyden jar, 234, 306 

 Lissajou, Jules A., 337, 339 

 Liverpool and Manchester railroad, 289 

 London and Birmingham railway, 289 

 London Exhibition, 357 

 Magnetic Telegraph Company, 300 

 Mahr, O., 366, 378 



Massachusetts Institute of Technology, 3 1 9 

 Masson, 356 

 Meyer, O. E., 385 



multiplex system, 308 

 Millward, William, 351 



magneto generator, 357 

 Moncel, Theodose du, 270, 271, 308, 337, 



339. 341 > 342, 345. 356, 357 362, 



375. 380, 386, 395 

 Morse, Samuel F. B., 286, 295, 296, 299, 



30O: 309 



key, 293, 298 



system, 293, 295, 298, 302, 308 



receiver and transmitter, 290 



relay plan, 300, 301 

 Morse-Vail telegraph, 300, 301 

 Muncke, G. W., 284, 286, 289 

 Munich Exposition, 390 

 Munich- Augsburg railroad, 284 



Museum of History and Technology, 295, 



3 = 5> 322, 328, 329 

 Napoleon, 275, 276, 361 

 Napoleon III, 268, 340, 342, 356, 361 

 National Bureau of Standards, 248, 256 

 needle telegraph, 278 

 New York University, 295, 296, 298 

 Nicholas I, Czar, 286, 339 

 Nicholson, William, 235, 238, 248, 250 

 Nollet, Florise, 351, 356 

 magneto, 356, 364 

 Nurnberg-Fiirth railroad, 284 

 Oersted, Hans C, 239, 241, 256, 278, 281, 



344 

 trough battery, 241 

 Ohm, 281, 282, 362 



Pacinotti's ring armature, 371, 375, 376 

 Page, Charles Grafton, 267, 269, 314, 315, 



349. 350, 352 



magneto generator, 352 



reciprocating motor, 269, 270 



rotating motor, 268, 269 

 Paris Exposition, 362, 375 

 Paris International Electrical Exhibition, 



1881, 288 

 Paris Opera House, 339, 343 

 Paris Univei'sal Exhibition, 404 

 Pepys, William, 236, 238 



combination printing telegraph, 304 



plunge battery, 240 



trough battery, 239 

 Philadelphia Centennial Exposition, 318, 



321, 323. 385. 393 

 Pixii, Hippolyte, 345 



magneto generator, 345, 349, 350 

 Plante, Gaston, 245, 246, 250, 251 



cell, 246, 250, 251 

 plunge battery, 238, 240, 241 

 Poggendorff, J. C, 245, 257, 259 



cell, 245 



condenser, 257 

 Pope, Franklin L., 263, 297, 371 



312 

 Preece, W. H., 297, 304, 305, 312 

 Prescott, G. B., 244, 245, 246, 248, 291, 

 296, 302, 304, 305, 306, 307, 313, 

 318, 320, 378 

 Priestley, Joseph, 238 



trough battery, 238 

 Prime Plating Company, 350 

 Prince Albert, 341 

 Princeton University, 281 

 Queen Victoria, 291, 337, 341 

 Quirini, 341 

 Razi, al-, 83 



Reis, Philipp, 312 



telephone, 312, 313, 316, 319, 320, 328 

 Reynaud, Leonce, 358, 359, 360, 364, 371 

 Reynier, 252 



Rhodes, F. L., 320, 327, 329, 331 

 Richard, Gustave, 353, 354, 361, 362 

 Ritchie, W., 261, 269, 281, 346, 350 



magneto generator, 350 



motor, 262 

 Rive, Auguste de la, 240, 241, 254, 256 

 Roger, Jules Jamin and Gustav, 362, 363 

 Roosevelt's telephone switch, 331 

 Royal Institution, 240, 260, 335, 354 

 Royal Society of Great Britain, 335 

 Ruhmkorff, 379 



Russian Academy of Sciences, 339 

 Sabine, R., 290, 295 

 St. Laurent, vessel, 361 

 Samson battery, 253 

 Saxton, Joseph, 346, 349 



generators, 350, 351 



magneto, 356 

 Schellen, H., 277 

 Schilling, Pavel L., 284, 286 



basic elements, 287 



telegraph and alarm, 286, 288, 289 

 Schnabel, Franz, 275, 276 

 Schweigger, J. S., 256, 257, 276, 282 



multiplier, 257 

 Scott's phonautograph, 319 

 Scoville firm, Waterbury, Conn., 254 

 semaphore telegraph, 276, 277 

 Serrin, Victor L. M., 341 



arc light, 357 



modile Suisse arc-light regulator, 341, 



342, 345> 346, 347: 348, 354> 357: 



361, 392, 393: 404 



Shafifner, T., 292, 293, 307, 309, 310, 311 



Shoolbred, J. N., 387, 390, 391 



Siemens, 286, 341, 365, 366, 367, 369, 370, 



371. 372, 374= 378, 379. 380, 387, 



39°: 39I: 392, 393: 404. 405: 406 



armature, 369-372, 374, 380 



dynamo, 365-367, 385, 387-393, 405 



Werner, 378, 379, 386 



William, 378, 387 

 Siemens and Halske, 372, 386, 387, 406 

 Silliman, Benjamin, 236, 243, 259 

 Sivewright, J., 297, 304, 305, 312 

 Smee, Alfred, 245 



cell, 245, 247, 248 

 Smith, C. Willoughby, 305, 306 



F. O. J., 298 



Sigurd, 376 



INDEX— PAPERS 28-30 



417 



