[112] “Glacial Drift of Scotland,” p. 58.
[113] Quart. Journ. Geol. Soc., vol. v., p. 22.
[114] “Glacial Drift of Scotland,” p. 64.
[115] Trans. Edin. Geol. Soc., vol. ii., p. 391.
[116] Trans. of Geol. Soc. of Glasgow, vol. iv., p. 146.
[117] Geol. Mag., vi., p. 391.
[118] See “Memoirs of Geological Survey of Scotland,” Explanation of sheet 22, p. 29. See also Trans. Glasgow Geol. Soc., iv., p. 150.
[119] “Great Ice Age,” p. 374.
[120] “Great Ice Age,” p. 384.
[121] “Geological Survey of Ohio, 1869,” p. 165. See also “Great Ice Age,” chap. xxviii.