REFERENCES
(The numbers of volumes are given throughout in thick type; the dates are between brackets, and the page-references follow in ordinary figures.)
[1] Cordier, "Mémoire sur les substances dites en masse, qui entrent dans la composition des Roches Volcaniques," Journ. de Physique, 83 (1816), 135, 285, and 352.
[2] On specific gravity of mineral grains see especially W. J. Sollas, Nature, 43 (1891), 404.
[3] Sorby, Q. Journ. Geol. Soc. London, 14 (1858), 453.
[4] Katzer, "Geologischer Führer durch Bosnien," IX internat. Geologencongress (1903), 190.
[5] A. W. Rogers, "Geology of Cape Colony," ed. 2 (1909), 401.
[6] Linck, "Die Bildung der Oolithe u. Rogensteine," Neues Jahrb. für Min., 16 (1903), 495.
[7] Daly, "The Limeless Ocean," Amer. Journ. Sci., Ser. 4, 23 (1907), 104, and "Evolution of the Limestones," Bull. Geol. Soc. Amer. 20 (1909), 153.
[8] A. R. Horwood, Geol. Mag. (1910), 173; and Cole and Little, ibid. (1911), 49, with references to literature.