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^{page 486 note 2} Note.—An analogous arrangement has been suggested by Washington with regard to a small group of rocks, characterized by high content of titanium, which he proposes to distinguish as a “Titanium Province”. See H. S. Washington, “The Titaniferous Basalts of the Western Mediterranean”: Q.J.G.S., vol. lxiii, 1907, p. 69.Google Scholar

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^{page 487 note 3} “Metamorphic Rocks of Adelie Land”: Rep. Aust. Ant. Exped., vol. iii, 1918, pt. i, p. 13. See also below, p. 489.Google Scholar

^{page 487 note 4} In this connection it may be noted that Dr. J. W. Evans has recently postulated the formation of garnets, together with certain other minerals of small molecular volumes, in magmas crystallizing under conditions of high pressures and comparatively low temperatures. “The Origin of the Alkali Igneous Rocks”: Geol. Mag., Vol. LVII, 1920, p. 559. See also note below, p. 491, on garnets and “piezocrystallization”.Google Scholar

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^{page 488 note 1} Lacroix, , op. oit., 1911.Google Scholar

^{page 488 note 2} Mem. Geol. Surv. India, vol. xxx, 1900, pt. ii.Google Scholar

^{page 488 note 3} Daly has commented upon the association of anorthositic and syenitic types both in the Adirondacks and in Western Norway. See Igneous Rocks and their Origin, 1914, p. 54.Google Scholar

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^{page 489 note 1} Iddings, J. P., Igneous Rocks, vol. ii, 1913. p. 358.Google Scholar

^{page 489 note 2} Rogers, G. S., Ann. X. Y. Ac. Sci., xxi, 1911, p. 11.Google Scholar

^{page 489 note 3} Watson, , Bull. Geol. Soc. Amer., 1915.Google Scholar

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^{page 489 note 7} “The North-Western Highlands of Scotland”: Mem. Geol. Surv. Great Britain, 1907.Google Scholar

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^{page 489 note 9} Op. cit., p. 469.Google Scholar

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^{page 490 note 1} Daly, , op. cit. Also L. L. Fermor, Rec. Geol. Surv. India, vol. xliii, 1913, p. 41.Google Scholar

^{page 490 note 2} Holland, T. H., “The Charnockite Series”: Mem. Geol. Surv: India, xxviii, 1900, p. 196.Google Scholar

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^{page 491 note 1} See also Holland on garnets in ancient rocks of Southern India, above, p. 485. Moreover, E. Weinschenk has brought forward evidence to show that the garnets, as well as the granularity, of the central granitic gneisses of the Alps may be regarded as having been produced during the crystallization of a viscous magma under the operation of a powerful directed pressure (“piezo-crystallization”), and not by later metamorphism. Cong. Géol. Inter., C.R., viii, 1900, p. 326.Google Scholar

^{page 491 note 2} Op. cit. supra, p. 196.Google Scholar

^{page 491 note 3} Granularity cannot necessarily be regarded as evidence of metamorphism; many igneous rocks are known to possess well-developed granular texture as a result of disturbance of some kind during crystallization. See Weinschenk re “piezocrystallization”, op. cit. supra, and also F. Dixey, “The Norite of Sierra Leone”: Proc. Geol. Soc., 1921, p. 103.Google Scholar

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^{page 491 note 5} Abs. Proc. Geol. Soc., 1921, p. 46.Google Scholar

^{page 492 note 1} Tilley, C. E., “The Granite Gneisses of Southern Eyre Peninsula (South Australia) and their Associated Amphibolites”: Q.J.G.S., vol. lxxvii, 1921. p. 75.CrossRefGoogle Scholar

^{page 492 note 2} Elemente der Gesteinslehre, 1910, p. 187.Google Scholar

^{page 492 note 3} “The Charnockite Series”: Mem. Geol. Surv. India, vol. xxviii, 1900, p. 131.Google Scholar

^{page 493 note 1} “Les Syénites Nepheliniques de l'Archipel de Los”: Nouv. Arch, du Mus. d'Hist. Nat., Paris, 5me Série, Tome 3, 1911, p. 108.Google Scholar

^{page 493 note 2} “Some British Pillow-Lavas and Associated Rocks”: Geol. Mag., 1911.Google Scholar

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^{page 493 note 4} Wolff, F. v., Vulkanismus, i, 1914, p. 153.Google Scholar

^{page 493 note 5} “The Charnockite Series of Igneous Rocks”: Amer. Journ. Sci., 1916, p. 323.Google Scholar