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- 119o.8 and - 121°.6, mean – 121° at a pressure of 50.6 atmospheres. The vapour tension of liquid argon at - 128°.6, is 38.0 atmospheres, at - 187° it is one atmosphere, and at - 1890.6 it solidifies to a colourless substance like ice. The specific gravity of liquid argon at about – 187° is nearly 1.5, which is far above that of other liquefied gases of very low absolute boiling point.

The discovery of argon is one of the most remarkable chemical acquisitions of recent times, and we trust that Lord Rayleigh and Professor Ramsay, who made this wonderful discovery, will further elucidate the true nature of argon, as this should widen the fundamental principles of chemistry, to which the chemists of Great Britain have from early times made such valuable contributions. It would be premature now to give any definite opinions upon so new a subject. Only one thing can be said ; argon is so inert that its rôle in nature cannot be considerable, notwithstanding its presence in the atmosphere. But as the atmosphere itself plays such a vast part in the life of the surface of the earth, every addition to our knowledge of its composition must directly or indirectly react upon the sum total of our knowledge of nature.

INDEX OF AUTHORITIES

ABA

BOI

ABASHEFF, i. 75
Abel, ii. 56, 326, 410
Acheson, ii. 107
Adie, ii. 186
Alexéeff, i. 75, 94
Alluard, i. 458
Amagat, i. 132, 135, 140
Amat, ii. 171
Ammermüller, i. 504
Ampère, i. 309
Andréeff, i. 251
Andrews, i. 136, 203
Angeli, i. 266
Ansdell, i. 451
Arfvedson, i. 575
Arrhenius, i. 89, 92, 389
Aschoff, ii. 313
Askenasy, i. 508
Aubel, ii. 45
Aubin, i. 238
Avdéeff, i. 618; ii. 484
Avogadro, i. 309

Becher, i. 17
Becker, i. 16
Beckmann, i. 91, 496 ; ü. 156
Becquerel, i. 228; ii. 97, 220
Beilby, i. 71
Beilstein, i, 373; ii. 188
Beketoff, i. 120, 122, 124, 146, 403, 459,

466, 534, 541, 574, 577; ii. 87, 102,

289, 429
Bender, i. 476
Benedict, ii. 65
Berglund, ii. 229
Bergman, i. 27, 435; ii. 100
Berlin, i. 95
Bernouilli, i. 81
Bernthsen, ii. 228
Bert, i. 86, 153
Bertheim, ii. 337
Berthelot, i. 171, 173, 189, 199, 229, 230,

258, 264, 266, 267, 272, 283, 289, 351,
372, 393, 394, 405, 415, 424, 438, 457,
463, 502, 506, 507, 518, 529, 537, 582;
ii. 23, 57, 207, 209, 251, 253, 259, 345,

367
Berthier, ii. 8
Berthollet, i. 27, 31, 105, 433, 434, 459,

470, 502, 609
Berzelius, i. 131, 148, 194, 255, 379; ii.

8, 100, 102, 147, 148, 219, 281, 300, 485
Besson, i. 288; ii. 67, 70, 105, 179
Beudant, ii. 7, 8
Bineau, i. 100, 271, 452, 504; ii. 239
Binget, i. 75
Blaese, ii. 188
Blagden, i. 91, 428
Blake, ii. 30
Blitz, ii. 184
Blomstrand, ii. 299
Boerwald, ii. 279
Böttger, ii. 595
Bogorodsky, i.
Boilleau, i. 415
Boisbaudran, L. de, i. 97, 102, 572, 600 ;

ii. 6, 26, 90, 82, 284, 483

BABO, V., i. 93, 200, 203
Bach, i. 394
Bachmetieff, ii. 31
Baeyer, v., i. 507
Bagouski, i. 384
Bailey, i. 449; ii. 29, 538
Baker, i. 318, 403
Balard, i. 480, 494, 495, 505
Ball, ii. 414
Bannoff, i. 506
Barfoed, ii. 53
Baroni, i. 331
Barreswill, ii. 282
Baudrimont, ii. 35
Baumé, i. 193
Baumgauer, ii. 20
Baumhauer, i, 495
Bayer, ii. 76, 159
Bazaroff, i. 409; ii. 24, 68, 486

[blocks in formation]

Bornemann, i. 509
Botkin, ii. 30
Bouchardat, ii. 45
Boullay, ii. 55
Bourdiakoff, i. 584, 617
Boussingault, i. 131, 157, 233, 235, 525,

615
Boyle, i. 124
Brand, ii. 150
Brandau, i. 481
Brandes, i. 72
Bravais, i. 233
Brauner, i. 490, 491 ; ii. 26, 59, 94, 96,

97, 134, 144, 194, 271, 483
Brewster, i. 569
Brigham, ii. 193
Brodie, i. 212, 351, 405 ; ii. 252
Brooke, ii. 357
Brown, i. 81, 88
Brugellmann, i. 616
Brunn, ii. 182, 189
Bruyn, i. 262
Brühl, i. 263, 337
Brunner, i.124,146, 263; ii. 230, 309, 534
Buchner, i. 615
Buckton, ii. 143
Buff, ii. 103
Bunge, i. 288
Runsen, i. 43, 69, 78, 117, 180, 465, 568,

575, 576, 577 ; ii. 27, 289
Bussy, i. 75, 594, 619
Butleroff, i. 143
Bystrom, i. 585

Chevreul, i. 530
Chigoffsky, ii. 62
Christomanos, i, 511
Chroustchoff, i. 353, 444; ii. 122
Chydenius, ii. 148, 485
Ciamician, i. 565, 573; ii. 486
Clark, i, 26
Classen, ii. 146
Clausius, i. 81, 93, 140, 142, 212, 309,

491
Clement, i. 494
Clève, ii. 26, 94, 97, 484
Cloez, i. 207, 246,-377
Clowes, i. 242
Calderon, i. 596
Collendar, i. 134
Comaille, i. 596
Comb, ii. 81
Connell, i. 508
Coppet, i. 91, 428, 601
Corenwinder, i. 501
Cornu, i. 565
Courtois, i. 494
Cracow, ii. 380
Crafts, i. 380 ; ii. 80, 83
Cremers, ii. 100
Croissier, i. 251
Crompton, i. 247
Crookes, i. 229, 617; ii. 20, 91, 96,

440, 491
Crum, ii. 79, 311
Cundall, i. 611
Curtius, i. 258, 265

CAGNIARD DE Latour, i. 135, 345
Cahours, ii. 143, 173
Cailletet, i. 132, 138 ; ii. 45
Callender, i. 134
Calvert, i. 484; ii. 45
Cannizzaro, i, 584, 587
Carey-Lea, ii. 420, 424, 425, 432
Carius, i. 69, 481
Carnelley, i. 483, 515, 555; ii. 22, 29, 30,

31, 64, 143, 486
Carnot, ii. 294, 361
Caron, i. 595, 604, 610; ii. 336
Carrara, i. 213
Cass, ii. 85
Castner, i. 431, 535, 541
Cavazzi, ii. 160, 172, 182
Cavendish, i. 113, 125, 228; ii. 493
Chabrié, i. 229
Chappuis, i. 50, 199, 205, 264
Chapuy, i. 59
Cheitzoff, i. 393, 457 ; ii. 41, 247, 582
Cherikoff, ii. 102
Chertel, ii. 245
Chevillot, ii. 311

Dail, ii. 59
Dalton, i. 29, 78, 81, 109, 206, 271, 322
Dana, ii. 8
Davies, i. 484
Davy, i. 37, 114, 195, 255, 364, 460, 463,

484, 489, 494, 533, 541, 594, 604, 617
Deacon, i. 599
Debray, i. 609; ii. 45, 122, 291, 293,

384, 385
De Chancourtois, ii. 20, 26
De Forcrand, ii. 106, 211
De Haën, ii. 189
De Heen, i. 140
Delafontaine, ii. 97, 148, 198
De la Rive, i. 198; ii. 226
Del-Rio, ii. 197
De Saussure, i. 235, 240
De Schulten, ii. 48
Deville, St.-Claire, i. 4, 36, 118, 143, 179,

180, 227, 239, 280, 281, 301, 320, 392,
393, 399, 459, 467, 476, 477, 500, 534,
595, 608, 609; ii. 48, 80, 83, 85, 102,
147, 156, 198, 289, 309, 321, 352, 373
374, 429

GRO

DE VRI
De Vries, i. 62, 64, 429
Dewar, i. 3, 5, 135, 139, 163, 297, 563,

565, 569, 585; ii. 176, 220
Dick, ii. 414
Dingwall, i. 486
Ditte, i. 72, 403, 430, 457, 509, 539, 618;

ii. 64, 65, 85, 189, 249
Dittmar, i. 100, 452 ; ii. 210
Divers, i. 274. 294 ; ii. 54
Dixon, i. 171
Döbereiner, i. 145
Dokouchaeff, i. 344
Donny, i. 534
Dossios, i. 502
Draper, i. 165
Drawe, ii. 161
Drebbel, i. 294
Dulong, i. 131, 148, 437
Dumas, i. 28, 131, 148, 150, 233, 302,

320, 379, 471, 476, 581, 586, 604; ii.

22, 37, 62, 101, 156, 420
Dumont, ii. 197

Fowler, i. 449
Frank, ii. 88
Franke, ii. 311, 313
Frankel, ii. 294
Frankenheim, ii. 7
Frankland, i. 178, 357, 486; ii. 16, 143
Fraunhofer, i. 563
Frémy, i. 228, 489, 492; ii. 74, 131, 133,

142, 229, 290, 359
Freyer, i. 171, 488
Friedheim, ii. 197, 294
Friedel, i. 353, 472 ; ii. 80, 83, 103,

122
Friedrich, i. 49; ii. 144
Fritzsche, i. 94, 285, 600, 612; ii. 125,

218, 280, 341
Fromherz, ii. 313
Fürst, i. 484

EBELMANN, ii. 65
Eder, i. 566
Edron, ii. 95
Edwards, ii. 311
Egoreff, i. 569
Eissler, i. 553
Elbers, ii. 221
Emich, i. 286, 287
Emilianoff, ii. 126
Engel, i. 457 ; ii. 130, 132, 189, 206
Engelhardt, i. 530
Eötvös, i. 333
Erdmann, i. 150
Ernst, i. 399
Eroféeff, i. 352
Esson, ii. 314

tard, i. 72, 516, 615; ii. 288, 335, 356
Ettinger, i. 53, 312

GALILEO, i. 7
Garni, i. 582
Garzarolli-Thurnlackh, i. 481
Gattermann, i. 596 ; ii. 102, 104
Gautier, i. 585
Gavalotisky, i. 160
Gay-Lussac, i. 40, 61, 71, 93, 170, 302,

307, 406, 412, 460, 463, 461, 467, 500,
506, 508, 511, 515, 534, 539; ii. 8, 50,

256
Geber, i. 17
Gélis, ii. 257
Genth, ii. 359
Georgi, ii. 197
Georgiewics, ii. 64
Gerberts, i. 528
Gerhardt, i. 196, 309, 357, 388
Gerlach, i. 525
Gernez, i. 97 ; ii. 205
Geuther, i. 281, 283, 285 ; ii. 176
Gibbs, i. 140, 464; ii. 293, 410
Girault, i. 498
Gladstone, i. 337, 438, 573; ii. 213
Glatzel, ii. 213, 289, 309
Glauber, i. 17, 26, 193, 432
Glinka, i. 607
Goldberg, i. 93
Gooch, i. 484
Gore, i. 489, 192, 493
Graham, i. 62, 63, 98, 143, 155, 388,

429, 518, 601 ; ii. 77, 114, 131, 163,

170, 296, 307
Granger, ii. 157, 410
Grassi, i. 88
Green, ii. 310
Greshoff, i. 403
Griffiths, i. 135

Grimaldi, i. 537
| Groth, ii. 10

FAMINTZIN, i. 611
Faraday, i. 134, 177, 296, 385, 463, 464
Favorsky, i. 373
Favre, i. 120, 172, 267; ii. 83, 259, 284,

380, 582
Fick, i. 62
Fisher, ii. 424
Fizeau, ii. 31, 429
Flavitzky, i. 21
Fleitmann, ii. 170
Foerster, ii. 375, 389
Forchhammer, ii. 311
Fordos, ii. 257
Fortmann, ii. 230, 366
Fourcroy, i. 114

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