Climate and Time in Their Geological Relations / A Theory of Secular Changes of the Earth's Climate

by James Croll

[142] Quart. Journ. Geol. Soc., vol. ix., p. 306.

[143] “Journal,” vol. i., p. 38.

[144] “Short American Tramp,” pp. 168, 174.

[145] “Short American Tramp,” pp. 239−241.

[146] “Travels in North America,” vol. ii., p. 137.

[147] Ibid., vol. ii., p. 174.

[148] Proceedings of the Royal Society of Edinburgh, Session 1865−66, p. 537.

[149] “Short American Tramp,” pp. 77, 81, 111.

[150] “Second Visit,” vol. ii., p. 367.

[151] “Memoirs of Boston Society of Natural History,” vol. i. (1867), p. 228.