Discusses phases of climate.

Describes fossil mammals discovered by Auguste Bravard in South America.

Has had argument with Bishop of Oxford [Samuel Wilberforce] about CD’s book [Origin].

Discusses review in Annals and Magazine of Natural History. Guesses that T. V. Wollaston is the author.

Discusses evidence of shells on Madeira.

Comments on paper by Wallace ["On the zoological geography of the Malay Archipelago", J. Proc. Linn. Soc. Lond. (Zool.) 4 (1860): 172–84].

Saw Salter’s Spirifer specimens; a very good proof of indefinite modifiability.

Beginning to think gap between Cambrian and Lower Silurian enormous.

Édouard Lartet to give paper before Geological Society ["On coexistence of man with certain extinct quadrupeds", Q. J. Geol. Soc. Lond. 16 (1859–60): 471–5].

CD would have carried the public more if he had explained adaptations by multiple causes, some unknown and some well known, i.e., natural selection.

Discusses Hooker’s views of extinction on St Helena.

Work on antiquity of man suspended.

Stopped by 11th edition of Principles of geology [1872].

Discusses the possibility of a land-bridge connecting Biscay with Ireland and the consequent occurrence in southern Ireland of Asturian plants which are absent from England.

Asks if Hooker or anyone has criticised Edward Forbes’ botanical migration of five floras in the British Isles ["On the connexion between the distribution of existing fauna and flora of the British Isles, and the geological changes which have affected their area", Mem. Geol. Surv. G. B. 1 (1846): 336–432].

Feels sure that at times the globe must have been superficially cooler. Believes CD will turn out right with regard to migration across the equator via mountain chains, while the tropical heat of certain lowlands was retained.

Recalls Cuvier’s reaction to Principles of geology.

Comments on Wallace’s article in the Quarterly Review [see 6684].

Not opposed to ARW’s idea that Supreme Will might direct variation.

Quotes passage in letter from ARW arguing for causes other than selection in determining human abilities.

Discusses excavation of lakes by glaciers.

J. P. Lesley does not believe ice-sheets involved in eroding Appalachians.