The pamphlet on the origin or variation of species sent by IGS-H has not arrived. CD is eager to see it and requests precise reference. ["Cours de zoologie (mammifères et oiseaux), fait au Muséum d’histoire naturelle, en 1850", Revue et Magasin de Zoologie Pure et Appliquée 2d ser. 3: 12–20.]

Orders a copy of Matthew 1831 from a bookseller.

Requests Natural History Review for 1861 until further notice.

Received Moritz Wagner’s essays [Das Ausland (May 1875)] and sent him a long letter [10643] disagreeing with his views because they do not explain adaptation.

Thanks for Büchner’s essay [Die Darwin’sche Theorie, 4th ed. (1876)].

Gives permission to translate Expression.

Has already written a testimonial for [?William Ramsay] McNab as Professor of Botany. Hence what he can write for EPW will not be of much use.

Gives his opinion on vivisection. CD detests cruelty but believes that physiology "is one of the most important sciences" and that it cannot progress without experiments on living animals.

CD gives his opinion on vivisection with the understanding that the whole letter will be published. Worked for Act of Parliament, but disapproves of the one passed. CD convinced English physiologists do not perform cruel experiments.

Cannot give lecture.