page 56 note * Geologist, vol. iv. p. 470; vol. v. pp. 57 and 323.

^{page 56 note †} ‘On the American Fossil Elephant of the Regions bordering on the Gulf of Mexico (E. Columbi, Falconer), with General Observations on the Living and Extinct Species.’. Natural History Review, January, 1863.

^{page 56 note ‡} Ossemens Fossiles, ed. 1834, vol. iv. p. 145.

^{page 56 note §} Cosmos, vol. i. p. 280.

^{page 56 note ∥} Nebraska Fauna, p. 9.

^{page 56 note ¶} Ostéographie, Eléphans, p. 157.

page 56 note ** Silliman's Journal, second series, vol. i. p. 244.

^{page 56 note ††} Bull. Geol. 1859, p. 469.

^{page 56 note ‡‡} Quarterly Journal Geol Soc., 1857, p. 319; 1858, p. 81.

^{page 56 note §§} Quarterly Journal Geol. Soc., vol. xiv., 1858, p. 81.

page 57 note * Nat. Hist. Review, vol. iii. p. 45.

^{page 57 note †} Id. p. 57.

^{page 57 note ‡} Page 50.

page 58 note * Owen, , ‘Address to the British Association at Leeds,” p. 39 Google Scholar.

^{page 58 note †} Falconer, Nat. Hist. Review, p. 60.

^{page 58 note ‡} Loc. cit. p. 52.

^{page 58 note §} Sur la dentition des proboscidiens fossiles, et sur la distribution géographique et stratigraphique de leurs débris en Europe.” Bull. Geol. 1859, p. 469.

page 59 note * Jukes, , ‘Student's Manual of Geology,’ 2nd ed., 8vo, Edinburgh, 1862 Google Scholar.

^{page 59 note †} Dana, , ‘Manual of Geology,” 8vo, Philadelphia, 1863, p. 562 Google Scholar.

^{page 59 note ‡} Loc. cit. p. 560.