The grass [see 6243] is Sporobolus elongatus, common in the tropics.

Visit to Oxford with X Club.

On his forthcoming address.

Thanks CD for article by G. H. Lewes ["Mr Darwin’s hypotheses, pt 1", Fortn. Rev. n.s. 3 (1868): 353–73]. Comments on article.

Describes hybridisation experiment carried out on rabbits and hares by Dr Conrad.

Encloses description of Monera

and a phylogenetic table of vertebrates.

Mentions work on Medusae.

The controversy over CD in Germany.

Has received copy of Variation.

Sends copy of his book [Die Spongien der Küste von Algier (1868)]. Comments on it.

Weighing ten deerhound puppies for CD each week.

Flattered that AQ wants JH's remarks to preface AQ's new work. No need to send French translation of JH's work. Asks AQ to omit certain passages.