518 



INDEX. 



T: ..<... 



Athard's eiperimeau an ice, 

 ' 



. electrical, law of, 40 

 jEplnus' experiment.. 424 



theory. 42S. 589 

 A. rial etactroMope. De Luc's, 

 Mf 



Air, vitiated, negative electrici- 

 ty of, 480 

 decomposed by electricity, 



an 



plate of, method of charging 

 it. 424. 544 



thermometer, Kinnenley't 



electrical. 528, 544 

 Amalgam, various kinds of, 



509 



Amber, electricity of. known 

 to Thales and Theo- 

 pfarastus, 411 

 Boyle's experiments on, 



412 



Ancients acquainted with the 

 electrical properties of am- 

 ber, 41 1 

 Apparatus, electrical, Part II. 



8 



Ascending thunder bolt, 490 

 Atmosphere, electricity of, du- 

 ring its erdinary 

 changes, 481 

 Le Monnicr on, ib. 

 Mazea* on, ib. 

 Kinnersley on, ib. 

 Beccaria on, ib. 



ire on, 481 

 Hon.iyneon, 483 

 Oavallo on. 484 

 Read on, 485 

 Crosseon, 486 

 during thunder and 



lightning, 487 

 Atmospheres, electric, 433 

 Attraction, electrical, 433, 540 

 law of, determined by 



Dr Robison, 440 

 by Coulomb, 448 

 Aurora borealis, electricity of 



the, 492 



table of the heights 

 of, 493 



B 



Balance, torsion, Coulomb's, 



4il 

 Battery, electrical, 43.T 



Franklin's, ib. 

 Cuthbertson's, ib. 

 Brccaria's experiments, 42O 



on i he fusion of me- 



t.iN. 498 

 on the oxidation of 



metals, 500 

 experiments on the 

 retivinr.ition of 

 meinls from their 

 oxides, :,ti\ 



in atmospherical e- 



iKlricity, -Ihl 

 el' < inlying ma- 



chinc, .51 1 

 ipptirAtu* for ringing, by 



. 434, 441) 

 B*UII-.- 



produced by electri- 

 4M 



Bcnnet's gold leaf electrometer, 

 5fl 



doubler, 5?i 

 Bergman** experiments, 423 



table of the bright* of 

 the aurora borealis, 

 4(3 



Berlholoo on the effects of elec- 

 tricity on vegetables, 

 507 



on the electricity of 

 the human body, 505 

 Biot on the deposition of elec- 

 tricity on spheroids, 545 

 Boyle's hypothesis, 412 

 experiments, fb. 

 Bole's experiments, 415 

 Brandt's experiments on the 

 electricity of different kinds 

 of flame, 432 



Brooke's experiments on the 

 fusion of metals by electri- 

 city, 498 



C 



Cabatus' hypothesis, 412 

 Calamine. electricity of, 460 

 Candle, how to light it by elec- 

 tricity, 498 

 Canton's experiments, 419 



electrometer, 521 

 Capillary tubes, water dischar- 

 ged from them rapidly by 

 electricity, 435 



Cavallo on the electricity of 

 mercury in glass 

 tubes, 431 

 electrometer, 522 

 collector of electricity, 



524 

 atmospherical collector, 



517 



experiments on atmo- 

 spherical electricity, 

 48* 



self-charging phial, 

 condenser, 5ift 

 doubler, 527 

 multiplier, ib. 



Cavendish's experiments, 425 

 experiments on the 



torpedo, 476 

 artificial torpedo, 



ib. 



on the decomposi- 

 tion of air, 502 

 theory of electrici- 

 ty, 425. 529 

 Cement for electrical purposes, 



509 



Chocolate, electricity of, 461 

 Cignu's ii[ : .nunlb on silk, 



42 i 

 Collector of electricity, Caval- 



lii'-, 524 

 Colours, effect* of electricity 



upon, V I 



Column, electric, De l.uc's.469 

 l.omliufliun produced by elec- 

 tricity. 4!>7 

 Commuiiu.itK'ii "." liiilricity, 



431 



Condvn- r. V. i'. ' . .'..'t 

 Cavallo'n, ib. 

 Cuihljertion's, 525 



Condenser, Nicholton'i spin. 



ning, 525 

 Read's, ib. 



Condensing electrometer, 525 

 Conductor, prime, 509 

 Conductors proposed by Dr 



Franklin. 417 

 list of, 432 

 for preserving build- 

 ings, 518 

 Configurations produced by e- 



lectricity, 4!>6 



Coulomb, experiments of, 426 

 on the law of electri- 

 cal action, 442 

 torsion balance, 441 

 on the dissipation of 



electricity, 444 

 on the distribution of 



electricity, 449 

 en the density of clcc 

 tricity in various 

 globes in contact, 



4i2 



Crossc on atmospherical electri- 

 city, 486 



Cuthbcrtson's experiment! on 

 the oxidation of 

 metals, 500 

 apparatus for fu- 

 sing wire, ib. 

 apparatus for de- 

 composing wa- 

 ter, 501 

 electrical machines, 



512 

 compound electro- 



meter, 523 

 condenser, 525 

 Cylinders of glass best for elec- 

 trifying machines, 510 



D 



Dalibard's experiments on 



lightning, 488 



Decomposition of fluids by elec- 

 tricity, 501 

 Van Troostwyk's 

 apparatus for the, 

 501 



Dr Pearson's, ib. 

 Cuthbertson's, ib. 

 Wollaston's, ib. 

 of gases, 502 



Delaval's experiments, ! .' > 

 Delors' experiments on light- 

 ning, 48 



De Luc'a electric column, 4C9 

 aerial electroscope, ib. 

 theory, 529 



Desagulier's experiments, 415 

 Descartes' lijjiolhesis, 412 

 Diamond, a i>owcrjul electric, 



ill 

 Bovle's experiments 



on, 412 



Difjby's hypothesis, 412 

 Di-ili.ir^er, Henley's univer- 

 sal, 

 Discharging tun. 435 



'.tr, Lane's, 



sn 



elect ometer, simple, 



Ih 



Doubli r, Itfinn tV, 525 

 Darwin's, 5*6 



Doubler, Nicholson's revoh ing, 



526 

 Dufay's discoveries, 414 



Effects of electricity. 494 

 HIM hanical. ib. 

 chtinical, 497 



cent, 503 

 niagnelic.il, 504 

 iiiiijU, 505 

 on vegetables, 507 

 Electric light, discovery of, 412 

 atmospheres, 433 

 column, De l.iu'.-, 460 

 Foster on the, 471 

 Singer on the, ib. 

 Electrical attraction and repul- 



sion, 433, 540 

 machines, 5U8 

 batter}', 435, 520 

 spark. 437, 544 

 light, 437 

 Electricity, production of, by 



friction, 429 

 positive and negative, 



540 

 communication of, 



431 



accumulation of, 435 

 light of, 437 

 laws of, 440 

 dissipation of, 444 

 disliibution of, 449 

 spontaneous, 456 

 produced by a change 

 of temperature, 45G 

 of the tourmalin, ib. 

 of the topaz, 459 

 of the Ixirate of mag- 



nesia, ib. 

 of mesotypc, 4GO 

 of calamine, ib. 

 produced by fusion, 



461 

 produced by evapora- 



tion, 462 

 produced by a scjiara- 



tion of pan 

 produced by dropping 



powders, i' ! ^ 

 produced in the elec- 



tric column, 469 

 of fishes, 472 

 of the torpedo, 476 

 of the gymnotus, 477 

 of the silurus, 479 

 of the trichiurus, 479 

 of the tetraodon, 479 

 of the human body, 



479 



of v, tinted air, 480 

 oflheaimospheic, 481 

 during its ordi- 

 nary changes, 

 Ml 



during thunder 

 and lightning, 

 461 

 of luminous meteors, 



492 

 nnrhftnical effects of, 



Initix. 



rlu inn :il effects 

 497 



of, 



