Lists the six honest believers in his species theory in England.

Asa Gray complains that Lyell acts like a judge on species, whereas CD complains of Lyell’s indecision.

CD working on divergence of leaves.

Distribution of Cameroon plants and the glacial theory.

Survival of island relics.

The Lyell–Falconer squabble.

Discusses island vs continental floras and their degree of modification.

Critical of Wallace.

CD’s observations on phyllotaxy.

Seeks advice for John Scott on job offer in India.

CD’s encouragement of John Scott, who has found a case of self-incompatibility in orchids, like William Herbert’s in Crinum.

Nägeli on phyllotaxy.

CD’s observations on broom fertilisation.