INDEX OF NAMES 
The numbers refer to the pages 
Abbott, 41, 56, 57, 58 
,, and Fowle, 36 
Adams, W. S., 10, 283 
,, and Joy, 62, 383 
,, Joy and Humason, 63 
„ „ „ Russell, 128, 167, 169 
,, and Kohlschütter, 10, 50 
Aitken, 58,182, 290, 291, 292,293, 326,327, 379 
Ambarzumian and Kosirev, 79 
Anderson, 74 
Aristarchus of Samos, 6 
Aston, F. W., 112 
Babinet, 395, 398 
Bailey, S. X, 25, 390 
Baker, H. F., 223 
Baker, R. H., 336 
Bessel, 7 
Boss, 26 
Bowen,137 
Bradley, 6 
Brill, 44 
Brown, E. W., 359 
Bruggencate, 390 
Bryan, 214 
Burnham, 313 
Burton, 137 
Campbell, W. W., 27, 28 
„ and Moore, 28 
Chamberlin and Moulton, 399 
Chapman, S. and Melotte, 14 
Charlier, 6, 17, 18, 375 
Chevalier, 283 
Coblentz, 35, 41, 43, 56 
Compton, 138 
Cook, 137 
Copernicus, 36 
Courvoisier, 313 
Curtis, 339, 377 
Curtiss and Rufus, 48 
Darwin (Sir G. H.), 206, 210, 211, 216, 219, 
222, 223, 231, 233 £f., 250, 294 
Descartes, 72 
Dirac, 138, 181 
Dugan (Russell, Stewart and), 46, 50, 54, 55 
Dyson (Sir F. W.), 283 
Eddington, A. S., 46, 67, 73, 75, 79, 82, 83, 84, 
94, 98,112,126,128,130,141, 
166, 170, 181, 366, 384, 387 
Einstein, A., 48, 50, 112, 127 
Emden, 70, 75, 77, 90, 271 
Fechner, 30 
Fermi, 74, 181 
Fouché, 396 
Fowle (Abbott and), 36 
Fowler, R. H., 150,181 
„ and Milne, 50, 52, 53, 57 
Fox, 283 
Fraunhofer, 49 
Freundlich. 80 
Frost, 22 
Furner (Jackson and), 370 
Galileo, 3, 6, 268 
Gordon, 138 
Gray, 139 
Groot, 358 
Halm, 303 
Hardcastle, 339 
Hartmann, 28 
Helmholtz, 110 
Henderson, 7 
Henroteau, 390 
Herschel (Sir W.), 6, 14, 16, 18, 26 
Herschel (Sir J.), 14, 26, 30 
Hertzsprung, 21, 22, 24, 43, 46, 61, 62, 128, 
167, 169, 310, 383 
Hinks, A. R., 25 
Hipparchus, 30 
Holetschek, 339 
Holmes, 110, 395 
Hopf, 80 
Hopman, 339 
Hubble, E., 12, 18, 19, 138, 331, 332, 333, 339, 
340, 341, 343, 350, 352, 357, 414 
Huggins (Sir W.), 166 
Hull (Nichols and), 37 
Humason (Adams, Joy and), 63 
Jackson, J. and Furner, 370 
Jacobi, 206, 209 
Jeffreys, 397, 398, 409 
Jonckheere, 24, 313 , 
Joy, 392 
,, (Adams and), 62 
,, (Adams, Humason and), 63 
,, (Russell, Adams and), 128, 167, 170 
Kant, 353 
Kapteyn, 14, 15, 16, 17, 34, 316, 362, 368, 369 
Keeler, 27 
Kelvin (Lord), 199, 206 
Kepler, 7 
Klein and Nishina, 139 
Kobold, 6 
Kohlschütter (Adams and), 10, 50 
Kolhorster, 137 
,, and van Salis, 137 
Kosirev (Ambarzumian and), 79 
Kramers, 83