About the Book
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1890 Excerpt: ... INDEX ABB Abbe, distribution of nebuloe, 374 Aberration of light, annual, 299, 330 secular, 329-30 Abipones, their Pleiad-ancestry, 221 Abney, amassing power of sensitive plates, 23; scale of photographic density, 29; analogy between spectra of Sohag prominence and of a Aquilnp, 47 Airy, Sir George, stellar parallax, 300; solar translation, 321--Miss, twelve Pleiades seen by, 223 Albategnius, red stars, 146 Albireo. See Cygni, 0 Alcyone, unnoticed by Ptolemy, 222; proper motion, 224, 225; distance from the earth, 226; intrinsic brilliancy, 226, 227; movement of approach, 229; connected nebulm, 230, 231; primary in group, 234 Aldebaran, magnitude, 3 note, 21, 22; chemical composition, 46; colour, 46, 146, 151; attendant star, 175; parallax, 314; recession from the earth, 341, 391 Alexander, Owl nebula, 256; spiral theory of Milky Way, 362 Algol, spectrum, 37, 137; light-changes, 130, 135-6; spectroscopic measurement of motion, 137; system formed by, 138, 143 note, 174; colour, 147 Algol-variables, 130, 135-144, 174, 182 Al-Sufi, colour of Algol, 147; of a Hydra, 147, 151; observations of Y Virginis, 182; of the Pleiades, 222; of Andromeda nebula, 268 Altair, appellation, 2; magnitude, 3 note, 21, 22; spectrum, 42, 47, 80; parallax, 314 Andromedae, y, colours, 157, 206; a triple star, 206 Angstrom, relative age of the stars, 85 ATM Antares, magnitude, 3 note; banded spectrum, 53; efficiency as a radiator, 61; ruddy tint, 146, 151; green satellite, 156, 176 Anthelmus, discovery of new star, 98 Apex, of the sun's wav, 321-2, 323, 324, 326, 328, 386, 388; must shift with time, 329 Aquarii, f, period of revolution, 195 AquiUc, o. See Altair--;), light-changes, 133, 134 Arcturus, identified by Homer, 2; magnitude, 3 note, 22; spectrum, 47, 80, 340; stage of develo...
