Alpha, Capricorni, 127 Centauri, 41, 57, 63, 99, 125, 134, 199, 204-5, 309 Cruci, 57 Eridani, 63 Orionis, 63 Alphabet, Greek, 65 Alphard, 188 Alpine plants, 930 Alps, glaciers of the, 510-13 Al-Sûfi, 60, 62, 63, 67, 68, 69, 163, 188, 193, 206, 219, 220 Altair, 57, 76, 85 Alternate generations, 962, 964-65, 1329 Amazon, the, 623, 625 America, fauna of, 1540, 1552-57 races of, 1672-73, 1677-78 vegetation in, 915-26 American Indians, 1677-78 Ammonites, 672 Amœba, 977-78 Anaxagoras, 376 Anchovy, 1544 Anderson, Dr., 68, 228-38 Andromeda, Constellation of, 78, 84 Andromedes, 281 Anemones, 1361 Angiosperms, 455, 890, 891-92, 958, 967 Angler-fish, 1569 Angström, 818 Animal, kingdom, 1296-1300, 1535 life, types of, 480 Animals, classification of, 1301-4 death-feigning instinct of, 1577-82 distribution of, 1520-35, 1561 dwellings of, 1601-2 fishing of, 1565-77 fur-bearing, 1547, 1554 hunting by, 1565-77 invertebrate, 1536 mimicry in, 1596, 1598-99 and plants, 976-78, 979-84, 1478 vertebrate, 1535 Annelids, 1603 Annulariæ, 469 Anogens, 455 Antares, 57, 76, 188 Ant-eater, 1571 Antennæ, 1439-45 Antherozoids, 1039 Anthers, 868, 1002 Antinous, 78 Ant-lions, 1417, 1568 Ants, 1408, 1409-11 Apes, 1626 Aphaniptera, 1419 Aphides, 1409-10, 1420 Apogamy, 967 Apospory, 967 Apothecia, 1212 Apple, of Carthage, 1095 Persian, 1095 Apteryx, 1524, 1528, 1561 Aquarius, 78 Arabians, 986, 1672, 1675 Arabs, the, 116-20 Arago, 54 Ararat, Mount, 500 Archegonia, 963 Archimedes, 64 Arcturus, 57, 63, 75, 86, 87, 122, 187, 315 Argelander, 58, 59, 62, 66, 68 Aristolochia, 956 Aristotle, 284 of Stagira, 986 Armadillo, 1555 Arnebia echioides. See _Prophet-Plant_ Arnold, Dr., 1069 Aroideæ, 952 Arrow, the, 77 Articulata, 481, 1303 Articulates, 459, 460 Arum, 952 Asia, fauna of, 1546-48 races of, 1672 vegetation in, 905-9 Ass, wild, 1546 Asteroids. See _Planetoids_ Astrocopium, 119 Astronomers, the first, 26 Atacama, desert of, 665 Atlantosaurus, 718 Atlas, 64 of Southern Stars, 61 Atlases, celestial, 65-66 Atmosphere, earth’s, 773-84 Atolls, 689-93, 699-707 Aurora, Borealis, 813-19 spectrum of, 346-47, 818 and sun, 817-18 Ausonius, 88-89 Australia, flora of, 886, 926-28 races of, 1673 vegetation in, 926-29 Avebury, Lord, 1105 B Baboons, 1529 Bacon, Roger, 799 Bacteria, 648-54, 1131-35 Badger, 1616, 1617 Baer, Von, 1294 Baker, Sir S., 1566 Balance, the, 78 Balata, the, 1153-54 Balloon ascensions, 776-77 Baltimore Oriole, 1631 Bamboo, 1115-22 Banana, 942-43, 952 Banisteria, 953, 956 Banks, Sir Joseph, 1387 Banyan tree, 1169-70 Baobab, 941, 950 Barley, 944 Barometer, 785