on length of residence of man in New World, 6; on preservation of mammals, 198 Howells, W. W., quoted, 1; sees similarity between American and Pacific tribes, 222 Howorth, Henry H., on extinction of mammals in New World, 201 Hrdlička, Aleš, attacks on traces of early man by, 124-28, 134; on Aurignacian and Magdalenian ancestry in American Indian, 218; on Calaveras skull, 123; on crossing into New World, 18, 20; on Indian culture, 240-41; on migration routes, 21 Huntington, Ellsworth, on migration across Atlantic, 25 I Ice ages, xii, 9, 18, 19; Alpine glaciations in, 47, 48; changes in sea level in, 50-53; classification of, 44, 45; extent of Wisconsin glaciation in, 18, 24, 26, 60; hypothesis of land bridge in, 17, 18, 289; hypothesis on causes of glaciation in, 53-60; mammals in Americas in, 190; migration in, 288-92; and migration routes, 21-25, 60; overlapping of centers in, 49; Sangamon Interglacial period in, 24; wood in, 35 Imbelloni, José, on advent of Pygmies in New World, 225-26 Indian race, autochthonous origin of, 233-34; as descendants of Welsh, 16; as inventor of own culture, 261; myth of, 207, 279 Insects, in man’s diet, 41 International Congress of Americanists, 257 J Java man. _See_ _Pithecanthropus erectus_ Jefferson, Thomas, excavates Virginia mound, 120; and fossils of extinct mammals, 191; on origin of Eskimo, 286 Jenks, A. E., 132; discoveries of, 154, 157; on Sauk Valley skull, 133 Johnson, Frederick, traces migration routes, 21 K Kay, G. F., on Minnesota man, 132 Keith, Sir Arthur, 31, 94; on Lagoa Santa craniums, 130; recognizes Australoid in America, 218 King, C. J., discoveries of, 178-79 Kingsborough, Lord, 129; believes Indians to be Lost Tribes, 15 Koch, A. C., 120-21; discoveries of, 154 Kroeber, Alfred L., on cultural diffusion, 244-45; on number of languages, 5 L _Lagenaria_ gourd, 258 Lagoa Santa caves, 121, 127, 130-32, 135, 142 Larkin, Frederick, on Indian domestication of mammoth, 194 Leakey, L. S. B., and discovery of _Zinjanthropus_, 86; on paleolithic pottery sherds, 38 Leechman, Douglas, traces migration routes, 21 Leighton, M. M., on finds at Elm Creek Silts, 162-63; on length of residence of man in New World, 31; on Minnesota man, 132 Lemert, Edwin M., discoveries of, 160 Lewis, Gilbert N., on neolithic culture in Andes, 256 Libby, Willard F., xi; and dating through radiocarbon, 95, 96, 165, 179, 278 Lubbock, Sir John, on division of paleolithic and neolithic ages, 36 Lund, P. W., 121; discoveries of, 130 Lyell, Sir Charles, 121; on late survival of mastodon in New World, 197