Principles of Geology / or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology

by Sir Charles Lyell

[123] Gibbon, Decline and Fall, chap. xxxiii.

[124] Id. Ibid.

[125] In the earlier editions of this work, a fourth book was added on Geology Proper, or Systematic Geology, containing an account of the former changes of the animate and inanimate creation, brought to light by an examination of the crust of the earth. This I afterwards (in 1838) expanded into a separate publication called the Elements of Manual Geology, of which a fourth edition appeared December, 1851.

[126] See two articles by the Rev. Dr. Fleming, in the Edinburgh New Phil. Journ. No. xii. p. 277, April, 1829; and No. xv. p. 65, Jan. 1830.

[127] Book iii. chaps. 46, 47, &c.

[128] Macacus pliocenus, Owen, Brit. Foss. Mam. Intr. p. 37, found with the extinct elephant, &c. in the modern freshwater beds at Grays Thurrock (Essex), in the valley of the Thames.

[129] Geol. Proceedings, No. xxxvi. June, 1834.

[130] Phil. Mag., Sept. 1829, and Jan. 1830.

[131] Fleming, Ed. New Phil. Journ., No. xii. p. 282, 1829. The zebra, however, inhabits chiefly the extra-tropical parts of Africa.

[132] Humboldt, Fragmens de Géologie, &c., tome ii. p. 388. Ehrenberg, Ann. des Sci. Nat., tome xxi. p. 387.