^{page 1 note 1} Geol. Mag., Vol. LX, 1923, p. 490.Google Scholar

^{page 1 note 2} Geol. Mag., Vol. LXI, 1924, p. 116.Google Scholar

^{page 2 note 1} Figures in parentheses refer to specimens in the possession of the Gold Coast Geological Survey.Google Scholar

^{page 2 note 2} Cf. Falconer, J. D., Geography and Geology of N. Nigeria, p. 110.Google Scholar

^{page 2 note 3} Hubert, H., Mission Sc. au Dahomey, 1908, p. 350 et seq.Google Scholar

^{page 4 note 1} In Meyer, H., Das deutsche Kolonialreich, ii, 1910.Google Scholar

^{page 6 note 1} Koert, W., Beitrage z. geol. Erforsch. d. deutsch. Schutzgeb., H. 1, 1913, p. 17.Google Scholar

^{page 6 note 2} Kitson, A. E., Rep. Gold Coast Geol. Surv. for 1915, 1917, p. 6.Google Scholar

^{page 6 note 3} Koert, W., op. cit., p. 15.Google Scholar

^{page 7 note 1} Hubert, H., op. cit., p. 414.Google Scholar

^{page 10 note 1} My attention was drawn to this rock by Dr. Thomas, H. H..Google Scholar

^{page 12 note 1} von Ammon, L., “Zur Geologie von Togo und vom Nigerlande” M. d. Geogr. Ges. München, i, 1905, p. 429.Google Scholar

^{page 15 note 1} Falconer, J. D., op. cit., p. 140.Google Scholar

^{page 16 note 1} Hubert, H., Compt. Rend., clii, p. 1606.Google Scholar

^{page 16 note 2} In Knox, , Geol. of Africa, 1905, p. 318.Google Scholar

^{page 16 note 3} Kitson, A. E., Rep. Gold Coast Geol. Surv. for 1915, 1917, p. 6.Google Scholar

^{page 16 note 4} von Ammon, L., op. cit., pp. 419–20 and 426–7.Google Scholar

^{page 18 note 1} See also Ammon, L. v., op. cit., p. 426–7.Google Scholar

^{page 19 note 1} Hubert, H., État actuel de nos Connaissances sur la Géologie de l' A frique Occidentale, ed. 2, 1919, p. 10.Google Scholar

^{page 19 note 2} Kitson, A. E., Rep. Gold Coast Geol. Surv. for 1917, 1919, p. 4.Google Scholar

^{page 19 note 3} Kitson, A. E., Rep. Gold Coast Geol. Surv. for 1919, p. 6.Google Scholar