INDEX. 



731 



Calotype process in photography, 299 



Camera obscura, 289, 304 ; in connection 

 with torpedo defence, 699 



Campani's eyepiece for compound micro- 

 scope, 240, 241 



Carcel lamps applied to electric light and 

 lighthouses, 221, 225, 668, 680 



Carillons, 125131 



Carre's apparatus for artificial ice, 384, 

 385 



Carre, M., inventor of the oscillating 

 steam-engine, 430 



Carriages (steam), early examples of, 461 



Carrier-pigeon post during the siege of 

 Paris, 311 



Caselli's autographic telegraph, 598, 601, 

 602- 



Cassegrain's telescope, 269 



Castanets, 121 



Cast-iron stoves, 345 



Catadioptric lighthouses, 224 ; telescopes, 

 263 



Catoptric, or reflecting, lighthouses, 220, 

 221 



Caus, Solomon de, his steam apparatus, 390 



Cavallo's electric telegraph, 544 



Cawley, John, improved steam-engine, 439 



Celestial photography, 329 



Cellars, temperature of, 358 



Centrifugal pump, 58 



Centrifugal regulators of steam-engines, 

 423 



Chaff-cutters, steam, 485 



Chance, J. T., improved prisms for light- 

 houses, 230 



Chappe's air-telegraphs, 543 ; optical tele- 

 graph, 625 



Charcoal, its use and heating-power, 355 



Charles, experiments with balloons, 89, 91 



Chazal, General, system of torpedo defence, 

 698 



Chemists' microscopes, 243, 246 



Chenot's electric sorter, 658 



Chevallier, Arthur, improvements in 

 microscopes, 241 



Chimes, 125131 



Chimneys, invention of, 335 ; of steam- 

 engines, 399 



Chinese gongs, 123 



Chinese jnnks, with paddle-wheels, 448 ; 

 steered by the compass, 519 



Chinese stringed and bow instruments, 153 



Chloroform-vapour and steam, combined 

 engines for, 504 



Choiselat, M., improvements in photo- 

 graphy, 297 



Christofle's applications of electro-plating, 

 704 ; electrotype statues at Paris Opera 

 House, 711 



Chromography, application of electrotype 

 to, 709 



Chromo-heliography, 320 



Chronographs, 647 



Chronometers, compensation action for, 

 373 



Chronopher, regulating Greenwich time- 

 signals, 646 



Chronoscopes, 647 



Church bells, 125 



Citharae, or lyres, of the ancient Greeks, 

 136, 137 



Clapeyron's steam-expansion system, 417 



Clarionets, 168, 172, 173 



Clarions, 175 



Clark, Latimer, pneumatic tube for 'mes- 

 sages, 78 



Clarke, Alvan, refracting telescope at 

 Washington, 262 



Claudet's improvements on the daguer- 

 reotype, 295, 306 



Clavecin, or harpsichord, 166 



Climate, its influences on mankind, 333, 

 338 



Clinometer, 19 



Clerk-Maxwell, Professor^ on lightning- 

 conductors, 542 



Clocks, electric, 633, 639 ; compensation 

 action, 373 ; illuminated, 637 ; pen- 

 dulums, 23 



Clock Tower of Houses of Parliament, 

 electric light at, 680 



Clothing, conductibility of heat by, 359 



Clouds, electric, means of dissipating, 531 



Coal, its use and heating power, 354 



Coddington's lens, 235, 237 



Coffey's apparatus for distilling alcohol, 

 379 



Coining, steam presses for, 491 



Coke, its employment and heating power, 

 354 



Collin, M., carillons at St. Germain 

 1'Auxerrois, 129 



Collodion, its employment in photography 

 and heliography, 302, 311, 318 



Colour of clothing, conductibility of heat, 

 361 



Combe's safety-lamps for miners, 363 



Combined engines, 459, 503 



Communicators for electric telegraphs, 573 



Compass, the: declination compass, 519 ; 

 variation compass, 524 ; surveying com- 

 pass, 526 ; inclination compass, 527 ; 

 dip circles, terrestrial magnetism, 527 ; 

 decimation, inclination, and dynamic 

 intensity, 528 



Compensating pendulums and balances, 

 369, 374 



Compound microscopes, 239 



Compressed air, industrial applications of, 

 69 



Compressed-air locomotives, 473 



Compressed-air posts and railways, 77 



Concert-rooms, application of acoustics to, 

 115 



Condorcet, improvements in lighthouses, 

 224 



Coiiductibility of heat, laws of, 357 



Constantinoff's chronograph, 649 



Contra-basso, 148 



Cook and Sons' refracting telescopes, 262 



