[29] A Hymn before Sunrise in the Vale of Chamouni, by Samuel Taylor Coleridge.
[30] Lyell’s Principles of Geology, vol. i., pp. 374-5.
[31] Voyage in 1822, p. 233.
[32] Elements of Geology, pp. 145, 146.
[33] Captain Horsburg, On Icebergs in Low Latitudes. Phil. Trans., 1830.
[34] Agassiz, Etudes sur les Glaciers; Tyndall, Glaciers of the Alps; also Heat as a mode of Motion, by the same Author; Lyell, Principles of Geology, vol. i., chapter xvi.; Elements of Geology, chapters xi., xii.; Wallace, Ice Marks in North Wales, in the Quarterly Journal of Science, No. xiii.
[35] Elements of Geology, p. 38.
[36] Mantell, Wonders of Geology, vol. i., p. 102.
[37] Lyell, Elements of Geology, p. 42; also Principles, vol. i., p. 410.
[38] Mantell’s Wonders of Geology, pp. 70, 81, 82, 83.