[86] Dewey and Flett, op. cit., [ref. 67], p. 245.

[87] Steinmann, op. cit., [ref. 68], p. 64.

[88] See especially W. J. Sollas, "The volcanic district of Carlingford," Trans. R. I. Acad., 30 (1894), 502.

[89] A. Geikie, op. cit., [ref. 65], 2, 344 and fig. 348.

[90] Branner, "Decomposition of rocks in Brazil," Bull. Geol. Soc. Am., 7 (1896), 255.

[91] Macculloch, "Description of the Western Islands of Scotland," 1 (1819), 267.

[92] For general discussions of Metamorphic Rocks, see A. Delesse, "Études sur le Métamorphisme des Roches" (1858); Lehmann, "Untersuchungen über die Entstehung der altkrystallinischen Schiefergesteine" (1884); A. Geikie, "Text-book of Geology" (1903), 764-807 and 728; Van Hise, "A Treatise on Metamorphism," U. S. Geol. Survey, Mon. 47 (1904); U. Grubenmann, "Die krystallinen Schiefer," ed. 2 (1909); A. Geikie and others, "The Geological Structure of the N. W. Highlands of Scotland," Mem. Geol. Surv. Scotland (1907).

[93] D'Aubuisson de Voisins, "Traité de Geognosie" (1819), 1, 298.

[94] Darwin, [ref. 50].

[95] Teall, "Metamorphosis of Dolerite into Hornblende-Schist," Q. Journ. Geol. Soc., 41 (1885), 133.