Tidal-action, 713-27 Tides, 713-27 Tierra del Fuegians, 1664-66, 1678 Tigris, the, 624 Titmouse, 1630 Titus, law of, 397 Toad, 1382-83 Toadstool, 1200 Tocusso, 945 Torch-thistles, 1181, 1183 Tornado, 844, 852-58 Tortoise, 1394-98, 1399-1401 Tortoise-shell, 1397 Toucans, 1556 Tournefort, 986-90 Toxotes jaculator, 1576 Trade-winds, 659, 663, 834-36, 841-42 Tree-frog, 1383 -palms, 885 -worship, 1078 Trees, 1030-31 Australian, 1139 California big, 876-84 deciduous, 1129 nut, 1174-80 poison, 1165, 1167-68, 1172, 1174 Tremendal, 631 Triangle, the, 78 Trias, 872 Trichoptera, 1417-18 Trilobites, 457, 460, 471, 481, 671 Tritons, 1383 Truffle, 1201 Trumpet-tree, 1165 Tschudi, Jacbon, 877 Tundras, 582, 637 Turkeys, 1523, 1556 Turks, 1672, 1674 Turtle, 1398-1401 Twins, the, 78, 98 Tycho Brahe, 69, 303, 353 Tycho Brahe’s star, 223-26 Typhoons, 845 U Ulloa, Don Antonio de, 807 Ulug Bekh, 67, 115, 118 Ungulata, 1536 Univalves, 459 Universe, the, 25-33, 51 Upas-tree, 1172, 1174 Uranography, Chinese, 76 Uranometria, Argentina, 66, 70 (Bayer’s), 64 Uranoscopus, 1569 Uranus, 131, 312, 313, 317, 332, 426-30 diameter of, 428 revolution of, 428 satellites of, 429-30 Urus, 1543 Utah, Great Salt Lake of, 579-81, 587 desert of, 662 V Vallisneria spiralis, 893, 1006 Vanilla, 955, 1152 Van Tieghem, 967 Vaucher, 1015 Vaucluse, the Gorges of, 604-5 Vedas, the, 501 Vega, 51-52, 57, 63, 76, 85, 87, 123, 187, 193 Vegetable-ivory, 1179 Vegetation, in Africa, 909-15 in America, 915-26 in Asia, 905-9 in Australia, 926-29 in Canary Isles, 932-34 of the earth, 946-56 in Europe, 898-904 in New Zealand, 939-30 zones of, 930-45 Venus, 131, 312, 317, 326, 331, 358-64 atmosphere of, 361 and Mercury, 355 climate of, 361 geography of, 362 orbit of, 360 phases of, 359-60 revolution of, 360 year of, 361 Venus’s Fly-trap, 1076-77 Vertebrata, 1301, 1337 Vertebrates, 460-61 Vesper, 359 Vesuvius, 525, 543, 545, 546, 548-49, 551, 556, 557 Via Lactea, 27 Virey, 1687 Vitellio, 799 Vitruvius, 598 Vizcacha, 1617-19 Volcanic, action, 516-27, 541-42 tuff, 445 Volcano, 545 definition of, 537-38 Volcanoes, 525-27, 536-59, 562, 570 eruptions of, 517 gaseous emanations, 518-19, 538-39 mud, 519-20, 522-25 Volga, the, 627, 637 Vulcan, 353 Vulpecula, 78 Vulture, 1551 W Wahlenberg’s region, 930, 939, 1143 Walker, Francis, 1452 Wallace, A. R., 1003, 1100-1, 1127, 1115, 1116, 1117, 1297, 1591, 1594, 1595, 1596, 1597 Wallich’s region, 940 Wasps, 1408, 1409, 1634 Water-bearer, the, 78 Waterspouts, 845 Weak, J. P. Mansel, 1101, 1598 Weather, 784 prognostics, 784-85, 827-28 charts of the, 786, 788, 827