Impressed by Fritz Müller’s argument for natural selection in air-breathing apparatus of crustaceans ["The Darwinian hypothesis supported by observations on Crustacea", Ann. & Mag. Nat. Hist. 3d ser. 15 (1865): 410–16].

Plans to visit CD.

Sends Fritz Müller citation as CD requested.

Huxley is boldly proclaiming his Darwinism at Royal Institution ["Methods and results of ethnology", Not. Proc. R. Inst. G. B. 4: 460–3; also Collected essays 7 (1894)].

May his son George call for advice on his career?

CD has been ill for past four months.

Reading Carl Vogt [Lectures on man (1864)].

Vogt, though anti-Lamarck, is converted to Darwinism.

How did CD handle his sons’ expenses at Cambridge?

Discusses income provided for sons at Cambridge.

Asks Emma to write to Erasmus [E. A. Darwin] in support of Miss Elizabeth Garrett as Professor of Physiology at Bedford College for girls.