Climatic Changes: Their Nature and Causes

by Ellsworth Huntington; Stephen Sargent Visher

[87] A. de Lapparent: Traité de Géologie, 1906.

[88] Chas. Schuchert: Historical Geology, 1915, p. 464.

[89] M. M. Metcalf: Upon an important method of studying problems of relationship and of geographical distribution; Proceedings National Academy of Sciences, Vol. 6, July, 1920, pp. 432-433.

[90] Chas. Schuchert: Paleogeography of North America; Bull. Geol. Soc. Am., Vol. 20, 1910; and Willis, Salisbury, and others: Outlines of Geologic History, 1910.

[91] Chas. Schuchert: The Earth's Changing Surface and Climate; in Lull: The Evolution of the Earth and Its Inhabitants, 1918, p. 50.

[92] A. J. Henry: The Decrease of Precipitation with Altitude; Monthly Weather Review, Vol. 47, 1919, pp. 33-41.

[93] Chas. F. Brooks: Monthly Weather Review, Vol. 46, 1918, p. 511; and also A. J. Henry and others: Weather Forecasting in the United States, 1913.

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

[95] Talbert, quoted by I. Bowman: Forest Physiography, 1911, p. 63.

[96] J. Barrell: Rhythms and the Measurement of Geologic Time; Bull. Geol. Soc. Am., Vol. 28, 1917, pp. 745-904.