Literature Cited.

Alling, H. F., 1936. Interpretative Petrology of the Igneous Rocks, New York.

Bartrum, J. A., 1924. The Igneous Rocks of a (?) Tertiary Conglomerate near Mangapai, Whangarei Harbour, New Zealand (abstr.), Rept. 16th Meeting Austr. and N.Z. Ass. Adv. Sc., Wellington, 1923, p. 345.

— 1935. Metamorphic Rocks and Albite-rich Igneous Rocks from Jurassic Conglomerates at Kawhia, Trans. Roy. Soc. N.Z., vol. 65, pp. 95–107.

Ferrar, H. T. 1925. The Geology of the Whangarei-Bay of Islands Subdivision, N.Z. Geol. Surv. Bull., no. 27 (n.s.)

Flett, J. S., and Hill, J. B., 1912. The Geology of the Lizard and Meneage, Mem. Geol. Surv. Eng. and Wales, London.

Harker, A., 1932. Metamorphism, London.

Service, H., 1937. Trans. Roy. Soc. N.Z., vol. 67, pt. 2, pp. 185–217.

Turner, F. J., 1937. The Metamorphic and Plutonic Rocks of Lake Manapouri, Fiordland, New Zealand, Part I, Ibid., vol. 67, pp. 83–100.

— and Bartrum, J. A., 1929. The Geology of the Takapuna-Silverdale District, Waitemata County, Auckland, Ibid., vol. 59, pp. 864–902.

Weinschenck, E. (trans. Johannsen, A.), 1916. The Fundamental Principles of Petrology, New York.

Wild, L. J., 1912. The Geology of the Bluff, New Zealand, Trans. Roy. Soc. N.Z., vol. 44, pp. 317–339.