CD is mistaken in considering Acropera unisexual, with only male flowers [Orchids, pp. 203–10]. JS has successfully fertilised two A. loddigesii flowers. One is ripening. Dissection of the other shows the pollen accomplishes fertilisation without contacting any stigmatic surface. Abortive ovules found in flowers that did not become fertilised when pollinated. JS suggests Acropera has both unisexual male and hermaphrodite flowers.

Discusses whether or not "male" Acropera bear fruit. JS’s interpretation of Acropera pollination is ingenious. Pollen-tubes of some cleistogamous flowers germinate in the anthers.

Appreciates CD’s acknowledging his letter and his comments on Acropera. Will send CD the Acropera capsule which is now maturing.

Experimenting on vegetable parthenogenesis.

Structure of Acropera.

Praises JS’s experimenting.

Has he ever studied the relative fertility of varieties? CD very interested in this subject.

Discusses Acropera.

Wants to quote JS on Zea [Variation 1: 321].

CD sends his Primula paper [Collected papers 2: 45–63].

JS does not fully accept natural selection.

Has never raised oxlips from cowslips or primroses; reports of such must be cases of crossing.

Discusses relative fertility of varieties, self-fertility of hybrids, and plans for experiments on enhanced hybrid fertility.