Queries on ratios of species to genera on southern islands. CD’s observations on distribution of Galapagos organisms, and on S. American fossils, and facts he has gathered since, lead him to conclusion that species are not immutable; "it is like confessing a murder".

Thanks for publishing his curves. Is proceeding with his reductions. G. B. Airy has forwarded the Greenwich observations. Would he obtain Howard Elphinstone's observations for him.

Intends moving into the country after midsummer and would like JH's advice on a suitable spot for an observatory. Regrets that the atmosphere of London is not suitable for astronomical work now.

Returned home full of health after his stay with JH. Visited the Pirie's at Maidstone. Someone suggested JH was the author of Vestiges. Mr. Pirie agrees with their project. Experiments by electricity for inducing plant growth. Mrs. Pirie has been giving him details of mesmerism at Maidstone.