[15]Herbert J. Spinden, _World Chronology and the Peopling of America_ (mimeographed Presidential Address read before the American Anthropological Society, Washington, Dec. 27, 1936), 5. [16]Herbert J. Spinden, personal communication, 1946. [17]Spinden, “First Peopling of America As a Chronological Problem,” in _Early Man_ (1937), 106, and _World Chronology, etc._, 5. [18]Spinden, _World Chronology, etc._, 4. [19]A. S. Loukashkin, “Some Observations on the Remains of a Pleistocene Fauna and of the Paleolithic Age in Northern Manchuria,” in _Early Man_ (1937), 327-340. [20]Spinden, “Time Scale for the New World.” _Proceedings, 8th American Scientific Congress_, 2:39 (1942), and _World Chronology, etc._, 2, 19. [21]Ernst Antevs, personal communication, 1946. [22]Kirk Bryan, “Geologic Antiquity of Man in America.” _Science_, new ser., 93:505-514 (1941). [23]Carl Sauer, “Early Relations of Man to Plants,” _Geographical Review_, 37:10 (1947). [24]Erwin H. Barbour and C. Bertrand Schultz, “Paleontologic and Geologic Consideration of Early Man in Nebraska,” _Bulletin, Nebraska State Museum_, 1:431 (1936). [25]George F. Carter, The Idea of the Recency of Man in America (unpublished MS.). [26]Albrecht Penck, “Wann kamen die Indianer nach Nordamerika?” _Proceedings, 23rd International Congress of Americanists_ (1930), 23-30. [27]H. V. Walter, A. Cathoud, and Anibal Mattos, “The Confins Man: A Contribution to the Study of Early Man in South America,” in _Early Man_ (1937), 345. [28]Kirk Bryan, “Correlation of the Deposits of Sandia Cave, New Mexico, with the Glacial Chronology,” Appendix to Hibben, “Evidences of Early Occupation in Sandia Cave” (_Smithsonian Miscellaneous Collections_, no. 23, 1941, vol. 99), 69. [29]Ernst Antevs, “Correlation of Wisconsin Glacial Maxima,” _American Journal of Science_, 243A:29 (1945) and “Dating Records of Early Man in the Southwest,” _American Naturalist_, 70:336 (1936). Chart in Gladwin, _Excavations at Snaketown_, 2:73. “Climatic History and the Antiquity of Man in California,” _Reports of the University of California Archaeological Survey_, 16:23-29 (1952). [30]Antevs, “Climate and Early Man in North America,” in _Early Man_, 128, and “Dating Records, etc.,” 333. [31]Carl Sauer, “Geographic Sketch of Early Man in America,” _Geographical Review_, 34:538 (1944). [32]M. C. Burkitt, _The Old Stone Age_, 86-87 (1933). REFERENCES AS TO ILLUSTRATIONS (_In the main, the earliest instances of publication_) PAGE 13. Edward Brerewood, _Enquiries Touching the Diversity of Languages, and Religions, Through the Chief Parts of the World_ (1622—1st ed., 1614). PAGE 18. W. A. Johnston, “Quaternary Geology of North America in Relation to the Migration of Man,” in _The American Aborigines_, ed. D. Jenness (1933).