CD arranges for copies of some blocks [for use in Descent] from Brehm’s [Illustrirtes Thierleben (1864–7)].

Expresses gratitude for the distinguished honour conferred upon him by the University of Bonn.

Enjoyed JDH’s visit.

Mrs Cameron’s photograph of JDH is grand.

Has heard J. V. Carus will be at Norwich. Suggests JDH mention that Origin was translated by two distinguished naturalists, H. G. Bronn and Carus.

Pleased at success of JDH’s address. Has read several press reports.

Spectator pitches into JDH about theology ["Dr Hooker on the evidences", 22 Aug 1868, pp. 986–7].

Feels JDH has "immensely advanced the belief in evolution of species".

Thinks GHL’s articles are quite excellent; hopes they will be republished.

Discusses adaptation. Doubts whether similar conditions without selection can produce similar organs independent of blood relationship: "resemblances due to descent and adaptation can commonly be distinguished".

Discusses luminous insects, electrical organs of fish, thorns and spines.