[89] Ibid., p. 305.
[90] Quarterly Journal of Geol. Soc., vol. vii., p. 89.
[91] See Bristow’s “Glossary of Mineralogy,” p. 11.
[92] “Pallas’s Voyage,” vol. iv., pp. 130-134.
[93] “Commentarii Academiæ Petersburgicæ,” p. 3.
[94] Dr. James Murie, Geological Magazine, vol. viii., p. 438.
[95] Edward Forbes in “Memoirs of the Geological Survey of Great Britain,” vol. i., p. 336.
[96] For full information on these deposits the reader is referred to the “Memoirs on the Structure of the Crag-beds of Norfolk and Suffolk,” by J. Prestwich, F.R.S., in the Quart. Jour. Geol. Soc., vol. xxvii., pp. 115, 325, and 452 (1871). Also to the many Papers by the Messrs. Searles Wood published in the Quar. Jour. Geol. Soc., the Ann. Nat. Hist., the Phil. Mag., &c.
[97] Lyell’s “Elements of Geology,” p. 203.