[18]Ibid., 102, 101.

[19]L. S. B. Leakey, The Stone Age Cultures of Kenya Colony (1931), 103-104, pl. 11.

[20]E. B. Sayles, An Archaeological Survey of Texas (Medallion Papers, Gila Pueblo, no. 17, 1935), table 9. Wm. Duncan Strong, “Finding the Tomb of a Warrior-God,” National Geographic Magazine, 91:459 (1947).

[21]Childe, “Changing Methods and Aims in Prehistory,” Proceedings, Prehistoric Society, 1935, 8.

[22]Seton Lloyd and Fuad Safar, “Tel Hassuna: Excavations by the Iraq Government Directorate General of Antiquities, in 1943 and 1944,” Journal of Near Eastern Studies, 4:255-289 (1945).

Chapter 4

[1]John Playfair, Illustrations of the Huttonian Theory of the Earth (1802), 388-389.

[2]A. Bernhardi, “Wie kamen die aus dem Norden stammenden Felsbruchstücke und Geschiebe, welche man in Norddeutschland und den benachbarten Ländern findet, an ihre gegenwärtigen Fundorte?” Jahrbuch für Mineralogie, Geognosie, und Petrefaktenkunde, 3:257-267 (1832).

[3]Albrecht Penck and Eduard Brückner, Die Alpen im Eiszeitalter (1901-1909).

[4]Ernst Antevs, Late Glacial Correlations and Ice Recession in Manitoba (Canada Geological Survey, Memoir 168, 1931), 2, 33.