Climatic Changes: Their Nature and Causes

by Ellsworth Huntington; Stephen Sargent Visher

[57] Griffith Taylor: Australian Meteorology, 1920, p. 189.

[58] Chamberlin and Salisbury: Geology, 1906, Vol. III, pp. 405-412.

[59] It may have retreated soon after reaching its maximum. If so, the general lack of thick terminal moraines would be explained. See page 122.

[60] Rollin T. Chamberlin: Personal Communication.

[61] F. H. Knowlton: Evolution of Geologic Climates; Bull. Geol. Soc. Am., Vol. 30, 1919, pp. 499-566.

[62] Chas. Schuchert: Review of Knowlton's Evolution of Geological Climates, in Am. Jour. Sci., 1921.

[63] G. R. Wieland: Distribution and Relationships of the Cycadeoids; Am. Jour. Bot., Vol. 7, 1920, pp. 125-145.

[64] D. T. MacDougal: Botanical Features of North American Deserts; Carnegie Instit. of Wash., No. 99, 1908.

[65] Loc. cit.

[66] H. H. Clayton: Variation in Solar Radiation and the Weather; Smiths. Misc. Coll., Vol. 71, No. 3, Washington, 1920.