Replies to CD’s queries on movement of the eyes in meditation, and changes in the iris in rage and terror [see Expression, pp. 229, 304].

Has read of Descent in Polish newspapers. Writes against the Bible view, but believes in the Almighty.

Sends publication [unspecified].

Notes adaptive mechanism in epiphytes.

Observations on orchids. Ophrys apifera; confirms CD’s observation on pollinia.  The nesting of ducks in trees is an example of change of instinct and habit.

Sends his review of St George Mivart’s book [Genesis of species] [North Am. Rev. 113 (1871): 64–103] in which CW defends natural selection.

CD elected an honorary member of the Asiatic Society of Bengal.

Regrets he cannot get to Queen Anne Street, but intends to come to Down.

Has arranged to send CD a bottle of urari [curare]. Describes its effect with strychnine.

Resemblance of ocelli, in a moth and the argus pheasant.

Mimicry.

Pugnacity of stickleback.