Appleton will bring out the new edition of Descent in the U. S., so GHD’s work will now be in three editions.

Farrer has taken the case to Northcote. JDH’s letter will show how overworked he is.

Observations on the insects captured by Utricularia.

Invites TB to visit. Wants to make his acquaintance.

Probably a discussiion of J. D. Hooker’s feelings after death of his wife, Frances Harriet, on 13 November 1874: the letter is badly damaged.

Has finished the "cousin paper" and will offer it to W. Farr for the Statistical Society.

Describes other work in progress.

Has CD heard of A. M. Mayer’s curious work on audition of insects [Am. J. Sci. 3d ser. 8 (1874): 89–103?]

Returns historical sketch [of GHD’s "cousin paper"?] with comments. "For Heavens sake put a sentence in some conspicuous place that your results seem to indicate that consanguineous marriage, as far as insanity is concerned, cannot be injurious in any very high degree."

On voluntary vomiting. Dogs re-swallow vomited food.

Thanks for new edition of Descent.

His work on geographical distribution; drudgery and the often unsatisfactory nature of the result.

No summary available.

Delighted with Farrer’s assistance. A. Helps has also spoken to Sir S. Northcote.

JDH is getting on well but has periods of great depression.

K. G. Semper’s article ["On the relationship of the Vertebrata and Annelida", Ann. & Mag. Nat. Hist. 15 (1875): 94–5] is ill-natured. Misinterprets facts already discovered by F. M. Balfour.

Has been working on Amphioxus. Puts his theory of vertebrate skulls on firm footing at last.

Sends French translation of Journal of researches and will send the £20 due to CD when 750 copies have been sold.

Cannot help with Pinguicula or Utricularia. Mrs Mary Treat is studying Utricularia.

Forwards his short piece on duration of varieties [New York Tribune 8 Dec 1874; Am. J. Sci. 3d ser. 9 (1875): 109–14].

Cites more examples of inheritance of maternal impressions.

Regrets the trouble GHD has had.

Thanks for translation of his Journal of researches. Is pleased by its appearance.

Also thank Edmond Barbier for his kind words. [See 9752.]

Describes his university lectures on evolution and their publication in a book [Die neuere Schöpfungsgeschichte (1875)].

Thanks JDH for his and Huxley’s countering of the false attack on George [Darwin] by Mivart. Encloses a note to Mivart on which he asks JDH’s opinion.

No summary available.