[26]Zeuner, “The Pleistocene Chronology of Central Europe,” _Geological Magazine_, 1935, opp. 357. Movius, _op. cit._ [27]Mather, _op. cit._, 161. Zeuner, _Dating the Past_, 200. Movius, _op. cit._ [28]V. Gordon Childe, _Progress and Archaeology_ (1944), 5. [29]_Ibid._, 6. Chapter 6 [1]“An Extract of Several Letters from Cotton Mather,” etc., _Philosophical Transactions_ (1714), 62. [2]Peter Kalm, _Travels into North America_ (2nd ed. 1772), 1:277-280. Nels C. Nelson, “The Antiquity of Man in America in the Light of Archaeology,” in _The American Aborigines_ (1933), 90. [3]M. F. Ashley Montagu, and C. Bernard Peterson, “The Earliest Account of the Association of Human Artifacts with Fossil Mammals in North America,” _Proceedings, American Philosophical Society_, 87:419 (1944). [4]P. W. Lund, _Blik paa Brasiliens Dyreverden, etc._ (1842), 195-196. [5]M. W. Dickeson, “Fossils from Natchez, Mississippi,” _Proceedings, Academy of Natural Sciences of Philadelphia_, 3:106-107 (1846). Charles Lyell, _A Second Visit to the United States_ (1st Amer. ed., 1849), 151-152, and _The Geological Evidences of the Antiquity of Man_ (2nd Amer. ed., 1863), 202-203. [6]Aleš Hrdlička, “Skeletal Remains Suggesting or Attributed to Early Man in North America,” _Bulletin, Bureau of American Ethnology_, no. 33 (1907), 23. [7]Charles C. Abbott, “The Stone Age in New Jersey,” _American Naturalist_, 1872, 6:144-160, 199-229 (1872), and “Evidences of the Antiquity of Man in Eastern North America,” _Proceedings, American Association for the Advancement of Science_, 37:293-315 (1889), Ernest Volk, _The Archaeology of the Delaware Valley_ (_Papers, Peabody Museum_, no. 5, 1911). [8]Frank H. H. Roberts, Jr., “Developments in the Problem of the North American Paleo-Indian,” _Smithsonian Miscellaneous Collections_, 100:52 (1940). [9]Aleš Hrdlička and others, _Early Man in South America_ (_Bulletin, Bureau of American Ethnology_, no. 52, 1912), numerous references in index. [10]Hrdlička, “The Problem of Man’s Antiquity in America,” _Proceedings, 8th American Scientific Congress_, 2:53 (1942). [11]Earnest A. Hooton, _Apes, Men, and Morons_ (1937), 111. [12]_Ibid._, 112. [13]Roberts, _op. cit._, 98. [14]Aleš Hrdlička, “Early Man in America: What Have the Bones to Say?” in _Early Man_, ed. G. G. MacCurdy (1937), 93-94. [15]Hrdlička, “The Origin and Antiquity of the American Indian,” _Smithsonian Institution Annual Report for 1923_, 491. [16]Hrdlička, “The Problem of Man’s Antiquity in America,” _Proceedings, 8th American Scientific Congress_, 2:53 (1942). [17]Hrdlička, “Early Man in America,” 101. [18]Hrdlička, “The Coming of Man from Asia in the Light of Recent Discoveries,” _Proceedings, American Philosophical Society_, 71:401 (1932). [19]Arthur Keith, _The Antiquity of Man_ (1920), 286.