Comments on Rodwell’s discussion of the “struggle for life” with reference to languages and G. H. Lewes’s article in the Cornhill Magazine (Lewes 1860, pp. 445–7). Comments on Rodwell’s account of horses affected by mildewed pasturage, and asks for more information about his white cat.

Observations on his white blue-eyed cat. There is no sign of deafness.

Apropos of ch. 5 of Origin, tells of blind rats found when a Roman bridge was excavated.

Comments on relationship between eye-colour and deafness in cats [discussed in Origin]. Asks for more information.

Mentions criticism of Origin.

Thanks for information about horses.

Hopes JMR writes his book on language. Mentions Hensleigh Wedgwood’s work [A dictionary of English etymology, 3 vols. (1859–65)].

Discusses Origin, suggesting confirmation might come from studying reproduction in microscopic organisms.

Gives anecdotal observations of blind rats and white cats.