Suggests that the height of the water which formed the shelves in Glen Roy was determined not by the height of the blocking glacier but by the height of a col. Notes problems in the idea.

Jamieson has revisited Glen Roy and confirmed his theory of glacier lakes.

A. G. More considers CD the most profound of reasoners.

Defends position he takes on species [in Antiquity of man]. CD overestimates CL’s capacity to influence public. Will not dogmatise on descent of man; prepared to accept it, but it "takes away much of the charm from my speculations on the past". Cannot go to Huxley’s length with regard to natural selection. Responds to CD’s comments on Antiquity of man.

Lyell has received compliments for letting readers draw own inferences [on species question]. Now feels he earlier did Lamarck injustice. [CD’s] substitution of variety-making power for volition [as in Lamarck] in some respects only a change of names.

Thinks Huxley taking on too many responsibilities.

Has been to Osborne on the Isle of Wight to visit Queen Victoria, who had lots of questions about CD.

Delighted to hear that CD was awarded Copley Medal. Important because award by chartered institution acts on outsiders and helps increase stock of moral courage.

His view of Origin.

Belief of Duke of Argyll that substituting "variation" and "selection" for creation deifies them.

Thinks Argyll would accept evolution except for man.

A’s view of humming-birds.

Describes discussion with [Victoria,] Princess Royal of Prussia, about evolution.

New edition of Elements consistent with Origin.

Emcloses copies of correspondence concerning his dispute with John Lubbock.

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.

Surprised at Hooker’s introducing "so organic a change as a deviation in the axis of the planet" to explain the cold of the Glacial Period.

Comments on cool-period MS. Still believes geographical changes principal cause of former changes of climate.

Curious to read what CD will say on man and his races.

Has CD seen Ludwig Rütimeyer’s Ueber die Herkunft unserer Thierwelt (Rütimeyer 1867c)?

Discusses J. F. W. Herschel’s theory of active volcanoes existing at the junction of continents and the sea.

Comments on proof-sheets of Variation.

His revisions of Principles of geology, 10th ed.

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.

Comments on Huxley’s address ["Geological reform", Q. J. Geol. Soc. Lond. 25 (1869): xxxviii–liii].

Physicists have ignored variation in sea-level in calculating effects.

Doubts if sun only source of heat.

Notes average depth of sea is 15 times height of land.

Criticises CD’s concept of permanent continents.

Sedimentary strata of Alleghenies must have derived from continent located where Atlantic is. Thinks enormous amount of denudation, submergence, and elevation may have accompanied relatively insignificant organic changes.

Has been looking for something about crop rotation in Origin and Variation.

Will subscribe £25 towards F. A. Dohrn’s Zoological Station at Naples.

Comments on Tyndall’s [Presidential] Address at Belfast meeting [of BAAS] and praise of CD’s work there. Mentions criticism of Belfast clergy.

CL saw some crustacean footprints while in Ireland.

Notes recent confirmation of CD’s views on subsidence in [island of] St Jago.

Describes Carboniferous strata discovered on Island of Mull by J. W. Judd. Contained evidence of Miocene sinking of volcanoes.