Comments on WRG’s MS on ratio of the sexes at birth.

Offers to send J. M. A. Thury’s paper ["Loi de production des sexes", Arch. Sci. Phys. & Nat. 18 (1863): 91–8].

Encloses a letter [7617] to be forwarded to the author of the review of Descent in Pall Mall Gazette.

Inquires about the effect of turf covering on the rate of disintegration of rock.

Regrets he has not time to develop points touched on in her letter and that he does not understand what information she wants.

Wants to sell some shares held in trust by EAD and Josiah Wedgwood [III].

Thanks her for marked proof-sheets.

Discusses climate in earlier geological periods.

All the inhabitants of Down hope JL will endeavour to induce the Post Office to improve the telegraph service.

Finished the last proofs of Descent a few days ago. "I shall be well abused."

St George Mivart’s Genesis [of species]: very good, unfortunately theological. Will tell heavily against natural selection but not against evolution, and this is "infinitely more important".

Comments on StGJM’s book [Genesis of species (1871)]. Has no personal objection to a word of it, but regrets their views differ so much.

Seeks information and observations on the contraction of the orbicular muscles as a consequence of skin irritation.

He has found passage on false belief, Variation 2: 414, and does not think the whole with context is dogmatic. [Encloses copy of the passage.]

Returns pamphlets.

B. T. Lowne’s observation [Mon. Microsc. J. 4 (1870): 326–30] that boiling does not kill certain moulds is curious, but then how account for absence of all living things in Pasteur’s experiment?

Always delighted to see a word in favour of Pangenesis.

Thiselton-Dyer’s paper ["On spontaneous generation and evolution", Q. J. Microsc. Sci. 10 (1870): 333–54] is Spencerian.

The chemical conditions for first production of life are said to exist at present, but in some warm little pond today such matter would be absorbed or devoured, which would not have been the case before living creatures were formed.

Will send copy of Descent.

Comments on JC-B’s MS on expression among insane. Asks about weeping in insane men. Do idiots laugh when pleased?

Thanks for photographs of insane. Asks for additional photographs.

Comments on Henry Maudsley [Body and mind (1870)].

Pointed ears in the insane.

Discusses publication of Descent. Orders copies of vol. 2 sent to Wallace, Mivart, and F. P. Cobbe.

Will attend Athenaeum and vote for RC.

JC-B’s MS most useful.

P. Gratiolet’s observations on contraction and dilation of pupils of eye of a person in extreme terror. Has JC-B ever observed this? Expression has been his hobby-horse for 30 years.

Thinks JT’s discovery of a glycerine respirator is an interesting practical discovery. CD has been wondering about the hairs in our nostrils, but doubts that JT has explained their function, since there are hardly enough.

Will ask W. Ogle to observe hairs in nostrils of different races.

Says Descent is "selling like Mad.––" Murray will print another 1500 or 2000 copies. Has received £630 for the 2500.

On Monday he visited Mivart, who is a charming man.

He seemed to be taken aback by CD’s points about the larynx and giraffe.

[See 7507 and 7519.]

He seemed to have forgotten CD’s argument regarding the formation of the greyhound.

Discussed the larynx and the silence of the Cetaceans.

If FD mentions any of this to [Marlborough Robert] Pryor, ask him not to mention it to anyone else "as it is perhaps rather a breach of confidence to repeat even to friends private conversation."

Ogle will keep JT’s suggestion in mind in observing less hairy races of man and the lower animals.

Asks JT whether he can help Ogle on a troublesome point on the colour of tissues with olfactory nerves, and the relation of colour to the absorption of odours. Does JT’s respirator deprive odorous substances of their smell?

Ogle is unacquainted with JT; would be proud and pleased to call on him. CD likes what little he has seen of him.

Admits pointer illustration is faulty.

Discusses shame, remorse, social instincts, approbation, and other topics discussed in Descent, ch. 4. "But as yet I nail my colours to the mast."