Men of the Old Stone Age: Their Environment, Life and Art

by Henry Fairfield Osborn

(37) Schmidt, op. cit., p. 5.

(38) Obermaier, 1912.1, pp. 170-174; 316-320; 332, 545.

(39) Charpentier, 1841.1.

(40) Agassiz, 1837.1; 1840.1; 1840.2.

(41) Morlot, 1854.1.

(42) Chamberlin, 1895.1; 1905.1, vol. III, chap. XIX, pp. 327-516.

(43) Salisbury, 1905.1.

(44) Penck, 1909.1.

(45) Leverett, 1910.1.

(46) Lyell, 1867.1, vol. I, pp. 293-301; 1877.1, vol. I, p. 287.