the Caspian is only 83 feet 6
inches.

The measurements of Major Anthony Symonds, since confirmed by
French authorities, make the Dead Sea to be 1200 feet below the
Mediterranean.

[238] See Lyell's Travels in N. America, ch. 2 and 25.

[239] See Manual of Geology, chap. 29 to 33, inclusive.

[240] See ch. 26, _infra._

[241] See ch. 27, _infra._

[242] Ann. des Sci. Nat., Septembre, Novembre, et Dacembre, 1829.
Revue Francaise, No. 15, May, 1830. Bulletin de la Sociata Gaol.
de France, p. 864, May, 1847. The latest edition of M. de
Beaumont's theory will be found in the 12th vol. of the
Dictionnaire Universel d'Hist. Nat. 1852, art. "Systemes des
Montagues;" also the same printed separately.

[243] Systeme de Mont. p. 762.

[244] Ibid. pp. 761 and 773.

[245] Phil. Mag. and Annals, No. 58. New Series, p. 242.

[246] Systeme de Montagnes, 1852, p. 429.

[247] Phil. Mag. and Annals, No. 58. New series, p. 243.

[248] Systeme de Montagnes, 1852, p. 429.

[249] For page, see Index, "Hopkins."

[250] Art. Systeme de Montagnes, p. 775.

[251] M. E de Beaumont in his later inquiries (Comptes rendus,
Sept. 1850, and Systemes des Montagnes) has come to the
conclusion, that the principal mountain ranges, if prolonged,
would intersect each other at certain angles, so as to produce a
regular geometric arrangement, which he calls "a pentagonal
network." This theory has been ably discussed and controverted by
Mr. Hopkins, in his Anniversary Address as President of the Geol.
Soc., Feb. 1853.

[252] Darwin's Geology of South America, p. 248. London, 1846.

[253] Systeme de Montagnes, p. 748.

[254] See Lyell's Manual of Elementary Geology, ch. 5.

[255] See the Author's Anniversary Address, Quart. Journ. Geol.
Soc. 1850, vol. vi. p. 46, from which some of the above passages
are extracted.

[256] See Lyell's Manual of Elementary Geology.

[257] Reports to Brit. Assoc. 1842, 1843, and Introd. to Brit.
Foss. Mamm. p. 31. The conchological evidence respecting the
British Miocene, Pliocene, and Pleistocene fossils, examined by
Mr. Forbes, in the paper before cited, p. 88, note, bear out some
of the most important conclusions of M. Deshayes, quoted by me in
the first edition of the Principles,