Sends two letters from G. Lincecum about ants ("perhaps the most marvellous instinct ever recorded") for possible publication. [See Gideon Lincecum, "The habits of the ""agricultural ants"" of Texas", J. Proc. Linn. Soc. Lond. (Zool.) 6 (1862): 29–31.]

Thanks GB for proposing him for Copley Medal; suspects he is responsible for the praise in Sabine’s "splendid eulogy" on his work. Has, however, written to Sabine to say he would have liked a little more said about the Origin.