resemblance to Swanscombe, 79 Stephens, John L., 129 Stewart, George R., on significance of scrapers, 103; on use of animal carcasses, 35 Stewart, T. D., 134; on Tepexpan man, 138 Strong, Duncan, 274; and Indian myths, 192 Strong, W. D., discovers milling stones, 169 Sullivan, Louis R., 218 Swanscombe man, 80; similarity to Neanderthal man of, 77, 78 T Talgai man, 221, 224 Tang, in Aterian arrowheads, 105-7; in Solutrean points, 104-6 Tartars, thought to be forebears of Indians, 13, 14 Taylor, Griffith, on early Australoid migration, 223-24 _Telanthropus_, 85 Ten Kate, C. F., discovers Pericú skulls, 135; recognizes Australoid in America, 218 Tepexpan man, 137-38, 278; challenged, 140 Terra, Helmut de, discoveries of, 137-38, 175, 177 Thomsen, Christian Jutgenson, defines culture periods, 33 Tools, in association with animal fossils, 164-67, 169, 177, 179, 195; Aurignacian, 99, 107; chopping, 286-87; core, 100, 174, 183, 286; for the dead, 88; earliest association of human remains with, 75, 84, 85; flake vs. core, 68; flaked, 70, 80, 81, 86, 88, 90-94; of Fontechevade man, 80; natural development of, 67, 68 Tree rings, 49 Treganza, A. E., discoveries of, 160 Trepanning, defined, 7 Tule Springs, discoveries at, 182 U Uhle, Max, excavates Quito find, 194-95 Uranium, in dating, 139-40 V Vaillant, George C., xii; dates sites of Indian culture, 247 Varves, 132; defined, 49 Vavilov, N. I., on temperate origins of agriculture, 266 Vespucci, Amerigo, 11 Vicuña, 8 Voltaire, on origin of man in New World, 15 W Weapons, in food gathering, 41 Wegener, A. L., hypothesis of drift of continents by, 224 Wegner, R. N., 223 Weidenreich, Franz, 83; on Tepexpan man, 138 Wenchung, Pei, 84 Whitney, J. D., 123 Wilford, L. A., on Sauk Valley skull, 133 Wilson, Thomas, 124; speculates on paleolithic hand axes, 173-74 Wissler, Clark, on cultural range and variety, 7; on first migration of man to New World, 277-78 Woman, as begetter of neolithic age, 38 Woodbury, George and Edna, on newer western craniums, 135 Wormington, H. M., 162 Wright, Sewall, hypothesis on extinction of mammals by, 202 Wright, W. B., on flake and core tools, 70 Writing, as determinant in time scale, 115; in Indian culture, 246, 253, 255, 262 Y Yukon Valley, as migration route, 21 Z Zero, invention of, 7, 255 Zeuner, Frederick E., on advent of Aurignacians, 100; on glaciation, 54, 55, 59; on stay of Solutreans in Europe, 102 _Zinjanthropus boisei_, 85 THE NATURAL HISTORY LIBRARY