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 publication [unspecified].

Notes adaptive mechanism in epiphytes.

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

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.

At Wallace’s suggestion he offers CD his observations on the seed-gathering habits of ants. Suggests their role in seed dispersal.

At work on the last part of his book [Contributions to the flora of Mentone (1867–71)].

Has found that Ophrys insectifera can reproduce asexually.

Gives examples of animal species in which adult males castrate or kill younger males.

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.