[2] Bulletin, 2e série, iv, 1304; and D’Archiac, Hist. des Progrès de la Géol., i, 38.
[3] See Quart. Geol. Journ., vol. xiv, pp. 465, 488.
[4] Syst. of Geol., vol. i, pp. 157 and 158.
[5] Geol. Trans., First Series, vol. iii, pl. 21.
[6] Captain B. Hall, Trans. Roy. Soc. Edinburgh, vol. vii.
[7] Western Islands, pl. 31.
[8] MacCulloch, Syst. of Geol., vol. ii, p. 58.
[9] Phil. Mag. and Annals, No. 27, New Series, March, 1829.
[10] Necker, Proceedings of the Geol. Soc., No. 26, p. 392.