[36-B] Princ. of Geol., Index, "Superior Lake."

[37-A] De la Beche, Geol. Researches, p. 95., and Geol. Observer (1851), p. 686.

[41-A] Vol. i. p. 399. first series.

[41-B] Piddington, Asiat. Research. vol. xviii. p. 226.

[42-A] Jam. Ed. New Phil. Journ. No. 30. p. 246.

[43-A] Stokes, Geol. Trans., vol. v. p. 212. second series.

[43-B] Ibid.

[46-A] In the first three editions of my Principles of Geology, I expressed many doubts as to the validity of the alleged proofs of a gradual rise of land in Sweden; but after visiting that country, in 1834, I retracted these objections, and published a detailed statement of the observations which led me to alter my opinion in the Phil. Trans. 1835, Part I. See also the Principles, 4th and subsequent editions.

[46-B] See his Journal of a Naturalist in Voyage of the Beagle, and his work on Coral Reefs.

[46-C] See chapters xxviii. to xxxi. inclusive.