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.

Receipt for payment by John Murray of £630 for the first edition, consisting of 2500 copies, of Descent.

Suggests sending his book [Descent?] to Popular Science Review.

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."

Discusses new edition of Descent.

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.

Invites him to visit.

Miss Butler is dead.

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."

Will write again to Tyndall about odours.

Asks for the circumstances under which WO saw a man arrested for murder; quotes from notes he made from WO’s conversation [Expression, p. 294].

Also would like to quote WO on the expression of resignation by persons about to undergo serious operations [Expression, p. 271].

Ogle wants very much to meet JT.

Thanks JT for his kindness to Ogle.

Seeks to clarify his and HW’s views on the causes of repentance or shame.

Asks permission to copy plates from GBAD’s work [Mécanisme de la physionomie humaine (1862)] to illustrate Expression.

Gives his opinion on four papers by J. P. M. Weale.

Thanks WO for his replies [to 7551]. Discusses the open mouth in surprise; asks WO to investigate its function in hearing and breathing.

Asks why deaf persons generally keep mouths open.

Pleased about sale and new issue [of Descent]. Discusses presentation copies.

Thanks RHB for information on expression in the blind.

Sends queries on expression and asks whether he could answer them with respect to those born blind.

Agrees that in a deaf person the jaw may fall because of concentrated attention.

In surprise, mouth is opened suddenly and chest filled with air. This expression occurs in all parts of the world. Odd that so simple a movement is so perplexing to understand.