"… hardly any event seems to me of such great importance as the settling of Australia, New Zealand, &c &c by the so called Anglo Saxons". CD thinks this due to population pressure.

Suggests possible visit by EH.

Comments on EH’s research.

Suggests revisions in proofs of Erasmus Darwin.

[Letter wrongly dated Nov by LD.]

Thanks CD for sending volumes of Dr Erasmus Darwin’s works. Hopes to finish Krause’s MS in a fortnight.

Rejects proposal that CD’s sketch appear as a supplement or appendix to his own. Offers alternative suggestions. Proposes title-page for German edition of Erasmus Darwin.

Gives an account of his publication plans for his and Ernst Krause’s Erasmus Darwin.

CD has never even dreamed of publishing his own autobiography.

Is now working, with Francis, on plant movements.

Is inclined to publish his "notice" after EK’s text in Erasmus Darwin. May condense and alter it, so EK should not translate yet. As soon as Dallas finishes translating EK’s text, CD will set to work. Thinks EK’s article more interesting than what he has written.

CD has been elected to the Naturforschende Gesellschaft, Halle. Asks for a photograph. Encloses diploma.

At work on Movement in plants.

Discusses John Ball’s, G. de Saporta’s, and his own theories of higher plant origin. Their rapid development remains an "abominable mystery".

Frank is working in Würzburg.

Contributes to subscription for Grant Allen.

Regrets GJR and wife could not visit.

Encloses paper [not identified] by Thomas Meehan, a very inaccurate observer.

CH, a chemist interested in zoology, asks CD’s opinion of research programme described on enclosed memorandum. Programme involves investigation of ability of molluscs to build shells out of other carbon compounds in absence of calcium carbonate.

Sends CD his collection of Homeric epithets on motion, which "indicate ideas of motion more precise and scientifically adjusted than … any other author".

Sends CD his article on causes of decline of Hawaiian population.

Regrets that he cannot send the promised volume [Biographie médicale, 7 vols, 1820–5, biographical appendix to Dictionaire des sciences medicales]. Offers to have his son make an abstract of the biography [of Erasmus Darwin].

JDH criticises John Ball’s theory of origin of higher plants in Carboniferous highlands, where low carbon dioxide levels permitted survival.

Sends an oration he delivered at the Royal College of Physicians in CD’s presence.

Best wishes for CD’s trip to Cumberland.

Thanks SW for text of his oration

and an [unspecified] article on parrots.

Difficulties with Krause’s handwriting and the time required to correct his sources have delayed the translation [of Erasmus Darwin].

Discusses Müller-Thurgau’s work on heliotropism. Will start on Thursday for Heidelberg and Strassburg.