[45]. Buckland, W., On the evidence of glaciers in Scotland and the north of England, Proc. London Geol. Soc., 3, 1841.

[46]. Hitchcock, Edward, First anniversary address before the Association of American Geologists, this Journal, 41, 232–275, 1841.

[47]. Third annual meeting of the Association of American Geologists and Naturalists, this Journal, 43, 154, 1842; Abstract of proceedings of the fourth session of the Association of American Geologists and Naturalists, ibid., 45, 321, 1843.

[48]. Rogers, H. D., Address delivered before Association of American Geologists and Naturalists, this Journal, 47, 275, 1844.

[49]. Agassiz, Louis, The erratic phenomena about Lake Superior, this Journal, 10, 83–101, 1850.

[50]. Desor, E., On the drift of Lake Superior, this Journal, 13, 93–109, 1852; Post-Pliocene of the southern States, etc., 14, 49–59, 1852.

[51]. Dana, J. D., Manual of geology, 546, Philadelphia, 1863.

[52]. Dana, J. D., on the Quaternary, or post-Tertiary of the New Haven region, this Journal, 1, 1–5, 1871.

[53]. Matthew, G. F., Surface geology of New Brunswick, this Journal, 2, 371–372, 1871.

[54]. Maclaren, Charles, The glacial theory of Prof. Agassiz, this Journal, 42, 365, 1842.