Summary

Has sent Kovalevsky his major paper on the moon’s motion, with references to others.

Summary

Sends table showing relative force of impact of weight dropped on a plane inclined at different angles.

Summary

Asks CD if he would like to sign GHD’s Royal Society proposal for membership.

Summary

Has sent off paper to the Royal Society

and begun work on a new problem which he feels contains the meaning of Bode’s Law, concerning the mean distances of the planets from the sun. There are mathematical difficulties, however, which he may be unable to surmount.

Will get to work on the pendulum next week.

Summary

Erasmus thinks CD should give a copy of Erasmus Darwin to Henry Parker.

Summary

Occupied with details of E. A. Darwin’s house and furniture. He has ordered a gravestone.

Summary

Writes of his work and a paper accepted for publication in the Philosophical Transactions [? "Stresses caused in the interior of the earth", Philos. Trans. R. Soc. Lond. 173 (1883): 187–230].

Gives news of friends.

Summary

Sends abstracts of more articles [on Dr Erasmus Darwin] from Monthly Magazine.

Summary

Instinctive responses in animals.

Summary

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

Summary

Urges CD not to break with Murray even if he does not force the editor [of Q. Rev.] to insert GHD’s letter [in response to Mivart’s attack]. Murray may have a rule not to meddle with editor.

Summary

Encloses letter from R. S. Ball [missing], who has placed reliance on Samuel Haughton’s wild speculations.

Has heard that J. Challis’s health is worse.

Summary

Sends CD a draft of a letter to Nature [see 9087], which he thinks expresses CD’s meaning.

Summary

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?]

Summary

Reports the passing of [Universities Tests] Bill and the consequent end to a bother.

Summary

Regrets he cannot follow the line of denial CD suggests. Explains why he must defend himself against charge that he approves of oppressive laws.

Summary

Has written to Col. J. L. Chester [genealogist] to ask whether he would like to see the deeds [for Darwin genealogy, see Emma Darwin 2: 237].

Summary

Explains the point about gravitation and heat that CD does not understand in J. Croll’s letter [6218?].

Cambridge news.

Summary

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".

Summary

Thinks William Thomson will support him [for Plumian Professorship at Cambridge].