^{page 497 note 1} “Contribution to the Discussion on Mr. Dörffel's Paper, ‘Note on the Geological Position of the Basement Granite,’” by Horwood, C. B.: Trans. Geol. Soc. S.A., vol. vi, pt. vi, pp. 114, 115.Google Scholar

^{page 497 note 2} The Witwatersrand System consists of the Upper and Lower Witwatersrand Beds; this division is purely an arbitrary one, and is placed at the base of the Main Reef Series.

^{page 497 note 3} “The Geological Relation of the Old Granite to the Witwatersrand Series,” by Corstorphine, G. S.: Trans. Geol. Soc. S.A., vol. vii, pt. i, pp. 9–12.Google Scholar

^{page 498 note 1} “Notes on some Intrusive Granites in the Transvaal, the Orange River Colony, and in Swaziland,” by Jorissen, E.: Trans. Geol. Soc. S.A., vol. vii, pt. iii, pp. 151–60.Google Scholar

^{page 498 note 2} “The Oldest Sedimentary Rocks of the Transvaal,” by Hatch, F. H.: Trans. Geol. Soc. S.A., vol. vii, pt. iii, pp. 147–50.Google Scholar

^{page 498 note 3} This name has since been generally adopted.

^{page 498 note 4} Loc. cit., p. 148.

^{page 498 note 5} Proc. Geol. Soc. S.A., 1904, to accompany vol. vii of the Transactions, p. 62.Google Scholar

^{page 499 note 1} “Note on some Intrusive Granites in the Transvaal, the Orange River Colony, and in Swaziland,” by Jorissen, E.: Trans. Geol. Soc. S.A., vol. vii, pt. iii, pp. 156, 157.Google Scholar

^{page 499 note 2} Trans. Geol. Soc. S.A., vol. ix, 1906, p. 28.Google Scholar

^{page 499 note 3} Trans. Geol. Soc. S.A., vol. x, 1907, pp. 51–61.Google Scholar

^{page 501 note 1} “Preliminary Notes on ‘Fundamental Gneiss Formation’ in South Africa,” by DrVoit, : Trans. Geol. Soc. S.A., 1905, vol. viii, pp. 106–7.Google Scholar

^{page 501 note 2} Trans. Geol. Soc., 1905, vol. viii, pp. 141–6.Google Scholar

^{page 502 note 1} He gives an occurrence of calcite rock, which is interbedded between the schists near Zand River, as an example of a highly altered igneous rock. Probably the crystalline limestones in the gneisses have also originated from the alteration of igneous rocks.

^{page 502 note 2} “Gneiss Formation in Africa,” by DrVoit, F. W.: Trans. Geol. Soc. S.A., vol. x, pp. 90–4.Google Scholar

^{page 502 note 3} Loc. cit., p. 93.

^{page 502 note 4} “On the Structure and Relations of the Laurentian System in Eastern Canada,” by Adams, Frank Dawson D.Sc., F.R.S.: Quart. Journ. Geol. Soc., vol. lxiv, No. ccliv, pp. 133–5.Google Scholar

^{page 502 note 5} “Report on the Crystalline Rocks of St. Lawrence County,” by Smyth, C. H, jun.: N. Y. State Mus. 49th Ann. Rep., 1895, vol. ii (1898), p. 490.Google Scholar

^{page 503 note 1} Paper read by MrTornau, before the Deutsche Geologische Gesellschaft, Berlin, 03 6, 1907.Google Scholar

^{page 503 note 2} “Preliminary Notes on ‘Fundamental Gneiss Formation’ in South Africa,” by DrVoit, F. W. (Trans. Geol. Soc. S.A., 1905, vol. viii, p. 107)Google Scholar, and “Gneiss Formation in Africa”, by DrVoit, F. W.(Trans. Geol. Soc. S.A., 1907, vol. x, p. 92).Google Scholar

^{page 503 note 3} “Gneiss Formation in Africa,” by Vait, F. W.: Trans. Geol. Soc. S.A., 1907, vol. x, p. 92.Google Scholar

^{page 503 note 4} Loc. cit., p. 93.

^{page 503 note 5} Proceedings of the Geol. Soc. of South Africa (to accompany vol. viii of the Transactions), 1906, pp. 57, 58.Google Scholar

^{page 504 note 1} “The Geology and Petrology of part of the Congo Free State,” by Preumont, G. F. J. & Howe, J. A.: Quart. Journ. Geol. Soc., 1905, vol. lxi, pp. 641–66.CrossRefGoogle Scholar

^{page 505 note 1} “The Post-Cretaceous Stratigraphy of Southern Nigeria,” “The Geology of the Oban Hills (Southern Nigeria),” “The Crystalline Rocks of the Kukuruku Hills (Southern Nigeria),” all by Parkinson, J.: Quart. Journ. Geol. Soc., 1907, vol. lxiii, No. ccli, pp. 308–17.CrossRefGoogle Scholar

^{page 505 note 2} “A Note on the Petrology and Physiography of Western Liberia,” by Parkinson, John: Quart. Journ. Geol. Soc., 1908, vol. lxiv, No. ccliv, pp. 313–16.CrossRefGoogle Scholar

^{page 505 note 3} Loc. cit.

^{page 505 note 4} “Gneiss Formation on the Limpopo,” by Voit, F. W.: Trans. Geol. Soc. S.A., 1905, vol. viii, p. 145.Google Scholar

^{page 505 note 5} “Notes on the Geology of Mashonaland and Matabeleland,” by Chalmers, J. A. and Hatch, F. H.: Geol. Mag., 1895, Dec. IV, vol. II, No. ccclxxi, pp. 193–203.CrossRefGoogle Scholar

^{page 506 note 1} “Copper Ore in South-West Africa,” by Kuntz, J.: Trans. Geol. Soc. S.A., 1904, vol. vii, pt. ii, p. 70.Google Scholar

^{page 506 note 2} “A Contribution to the Geology of German South-West Africa,” by DrVoit, F. W.: Trans. Geol. Soc. S.A., 1904, vol. vii, pt. ii, pp. 77–94.Google Scholar

^{page 507 note 1} An Introduction to the Geology of Cape Colony, by Rogers, A. W., 1905 (Longmans, Green, &Co., London).Google Scholar