Summary

Mentions a discussion of man by Isidore Geoffroy Saint-Hilaire in his Histoire naturelle générale [1854–62].

Mentions a book by Friedrich Rolle [Ch. Darwin’s Lehre von der Entstehung der Arten (1863)].

Cites evolutionary statements on elephants by Hugh Falconer and notes Falconer’s objection to natural selection.

Summary

TFJ returns CD’s "too flattering" letter concerning Glen Roy [see 3761]. Further discussion of [A. C.] Ramsay’s, [J. D.] Hooker’s, and CL’s arguments about the formation of glacial lakes.

Summary

Further comments on Jamieson’s theory of the formation of the roads of Glen Roy; paper by Jamieson dealing with glaciation in Scotland ["On the ice-worn rocks of Scotland", Q. J. Geol. Soc. Lond. 18 (1862): 164–84].

Comments on paper by A. C. Ramsay on the glacial formation of lakes ["On the glacial origin of certain lakes", Q. J. Geol. Soc. Lond. 18 (1862): 185–204].

Criticises remarks by John Tyndall on glacial formation of Swiss valleys.

Summary

Rolle has done great service by publishing his book [Ch. Darwin’s Lehre von der Entstehung der Arten (1863)].

Summary

Extreme interest in MS of HF’s paper on the American fossil elephant [Nat. Hist. Rev. n.s. 3 (1863): 43–114].

Pleased HF does not believe in immutable species. Significance of proboscidean group verging towards extinction. Comments on natural selection preserving type despite variability. Natural selection solves problem of how every part of each creature has become adapted.

Summary

Has sent Masdevallia and other plants.

J. J. F. W. v. Parrot’s Ararat [(1834), trans. W. D. Cooley, in The world surveyed in the XIXth century, vol. 1 (1845)] refreshing in its simple faith in the ark.