Ill health.

At work on Variation.

Reading JDH on Welwitschia.

Letter from Lyell defends his position on species.

Anger at Owen.

John Lubbock’s lectures.

Thanks for information [on regeneration quotation].

Answers JS’s criticism of natural selection, which he doubts JS understands. CD does not believe in an "innate selective principle".

To understand "utility" JS should read CD on correlation.

Origin of maize: no longer thinks husked form was wild because of Asa Gray’s evidence on its variability.

Has information from Thomas Rivers on weeping habit in trees.

JS’s experiments on coloured primroses.

Encloses bibliographical note on Passiflora.

Lyell’s position on mutability.

Fertilisation of trees by bees.

Lyell’s Antiquity of man lacks originality.

Statements in Lyell provoke CD to determine exact publication date of Origin and JDH’s introductory essay [to Flora Tasmaniae].

CD now believes in repeated periods of global cooling and migration.

Observation on morphology of Primula ovarium sent for DO’s use.

Enthusiastic about JS’s work on Passiflora self-incompatibility.

CD quotes JS on rostellar pollen germination [in "Fertilisation of orchids", Collected papers 2: 77–8]. H. Crüger attributes it to ants’ carrying stigmatic secretion to pollen.

Homomorphic cowslip seedlings are, sadly, showing variation.

CD’s opinion of Lyell’s Antiquity of man.

Geographical distribution during and between glacial periods.

Latent characters and reversion.

Nectar secretion in Edwardsia. Could the stamen protect stigma?

Sends monstrous Primula with three pistils.

Had never heard of Robert Caspary, but what DO thinks is the placenta could be a whorl of pistils without stigmas.

CD regrets he used "creation" in Origin when he meant "appeared".

An Oken-like article in "Owenian style" in Athenæum.

Tropical plants continue to be troublesome.

Thanks for potatoes, which may be useful in crossing.

Germination of seeds in earth on partridge’s foot.