Has had 16 in the household ill.

Wants to meet JL.

Praises JL’s paper ["Ancient lake-habitations of Switzerland", Nat. Hist. Rev. n.s. 2 (1862): 26–51].

Leonard Darwin’s illness.

William Darwin and the bank.

Beginning to make out a marvellous case of trimorphism.

Hive-bees and clover.

CD was in error about bees’ behaviour at clover.

Finds JL’s facts on the diving insect that remains four hours under water new and interesting [see "On two aquatic Hymenoptera", Trans. Linn. Soc. Lond. 24 (1864): 135–42].

Would like JL to call.

H. W. Bates’s paper; CD will review it. ["Mimetic butterflies" (1863), Collected papers 2: 87–92.]