INDEX 



Numbers refer to pages. 



Aberration Problems, 674. 

 Abney, Sir William de W., 491, 499, 



574. 

 Absorption, Electric, 139, 297, 319, 



321. 

 Absorption, Electric, of Crystals, 



204. 

 Academy of Arts and Sciences, 



American, 7, 343, 611. 

 Academy of Sciences, National, 1, 



15, 610. 



Academy, French, 411. 

 Aepinus, 626, 639. 

 Air-thermometer, 358, 366. 

 Alternating Currents, 276, 280, 294, 



314, 661. 



Amagat, E. H., 410. 

 Amaury (see Jamin), 344, 388. 

 Ames, J. S., 525, 551, 691. 

 Ampere, 627, 639. 

 Anderson's Method of Measuring 



Resistance, 308. 

 Angstrom, A. J., 512, 513, 546, 553, 



555. 



Angstrom's Scale, 517, 553. 

 Arago, 642. 



Archimedes, 619, 620, 621. 

 Atmospheric Electricity, 183, 212. 

 Aurora, Spectrum of the, 2, 31. 

 Aurora, Theory of the, 179. 

 Ayrton, W. E., 179, 182, 183, 213, 278. 



Barker, George F., 3, 200, 364, 570. 

 Barometer, 362. 

 Basic Lines of Lockyer, 524. 

 Battery, Water, 241. 

 Baudin's Thermometers, 364, 386, 

 465. 

 45 



Becquerel, A. C., 184, 214. 



Beek, A. van, 411. 



Bell, Graham, 574. 



Bell, Louis, 242, 513 et seq., 545, 546, 



553 et seq. 



Benzenberg, J. F., 411. 

 Berard, J. E., 409, 410. 

 Berlin, University of, 4, 128. 

 Berlin Academy, 4. 

 Biot, J. B., 39, 90, 114, 116, 626, 627, 



639. 



Bosscha, J., 408, 465. 

 Boyle, Eobert, 7. 

 Brashear, J. A., 9. 

 Bravais, A., 411. 

 Briggs, L. J., 571, 573. 

 B. A. Unit, 82, 84, 145, 146, 156, 217, 



239. 

 Bruce, Miss, 521. 



O. 



Calorimetry, 387. 



Canton, John, 625. 



Capacity, Electric, 297 et seq., 314 

 et seq. 



Carmichael, N. E., 571, 573. 



Cathetometer, 361. 



Cavendish, Henry, 626, 639. 



Cazin, A. A., 36, 48, 410. 



Chapman (see Eutherfurd), 8. 



Chemical Reaction, Action of Mag- 

 net on, 242. 



Clarke, F. W., 570. 



Clausius, E. J. E., 204, 205, 210. 



Clement (see Desormes), 410. 



Colardeau, 249. 



Concave Gratings, 488, 492, 505. 



Condenser, Standard, 267. 



Convection, Electric, 128, 138, 179, 

 251. 



Copernicus, 614. 



