Suggests GHD write a supplement to his review [of A. H. Huth’s The marriage of near kin (1875)]. Feels sorry Huth was taken in by the Legrain fraud. [See Autobiography (1958), pp. 143–4.]

CD’s suspicions that Legrain falsified experiments on interbred rabbits are like second sight. Has sent a copy of the letter to A. H. Huth.

Henry Sidgwick and A. J. Balfour are "spiritualising" again.

Sends comments and suggestions for Huth’s experiment on crossbreeding rabbits.

Sends an article for CD’s opinion.

Has finished an account of the globes for the Philosophical Magazine ["On maps of the world", 50 (1875): 431–44].

His poor health has interfered with his pitch experiments.

Pleased by W. Stanley Jevons’ letter.

Has ordered Dr Cohn’s book.

Is sure that GHD’s energy will lead to success with work on viscous fluids.

Asks that a copy of GHD’s paper on cousin marriage be sent to Hermann Müller. J. F. McLennan admires it "as a model".

Has sent a copy [of his article on cousin marriage] to Hermann Müller.

Problem he is now working on is a tough nut: "It does not do what [James Clerk] Maxwell said it wd or ought to do".

Müller has sent Chips [from a German workshop (1867–75)] and a boring defence against WDW’s attack. GHD feels he is maligned for using the weight of CD’s name in his Contemporary Review article. CD says Müller has misinterpreted a letter from CD as supporting him in his controversy with WDW.

Gives further explanations of his theory of stirps and his objections to Pangenesis, in answer to a question of CD’s.

Asks GHD to calculate average or mean heights of crossed and self-fertilised plant species.

Provides CD with a method of obtaining a numerical ratio that expresses the superiority in heights of crossed plants to self-fertilised plants.

Cancelled: duplicate of FL-1392.xml.

Personal news – is unwell.

Mentions "Twin-papers" ["Short notes on heredity, etc., in twins", J. Anthropol. Inst. 5 (1876): 324–9] sent by Galton.

Is elated by his work on the alteration in the earth’s axis and the displacement of the poles. [See 10689.]

Sends Mind. Henry Sidgwick’s article ["The theory of evolution in its application to practice", Mind 1 (1876): 52–67] is so clear it makes CD feel "a muddle-headed man". But he disagrees with Sidgwick on the origin of morality within tribes.

Is sure mathematical discussion of elevation of continents will be valued by geologists.

Writes of his "geo-mathematical" work.

Comments on the reaction of geologists to GHD’s work on elevation of continents.

His paper on the alterations of the poles and changes in level of continents is in shape.

Sends Cambridge news.

Greatly excited by the astronomical implications of his work.