Writes about [H. R. Hope-]Pinker, who tried to approach CD via the Royal Institution in order to sculpt a bust of him. WS advises against agreeing to sit for him.

Refers to Charles Lagrange, who is working on the same subject as GHD, but in a fundamentally different way.

Sends drawings of specimens [of Thalia] CD requested.

Chlorophyll development in oat seedling.

Lists the sleeping plants he has seen.

Julius Sachs thinks Hugo de Vries has not cleared up everything [about climbing plants]. But Sachs has not worked on the mechanical problem.

Has found examples of small female flowers in Stachys germanica and Ranunculus bulbosus.

Sends specimens.

Sensitive plants.

More sleepers from green-house.

Julius Sachs’s view of climbing plants: he distinguishes between nutation to find a support and growth after support is found.

Explains difficulties in supplying wings of geese. Describes injury of old gander that sired the abnormal geese.

Informs CD that certain cash from U. S. investments does not have income tax deducted.

Has been investigating nutational movements of climbing plants; comments on the opinions of Julius von Wiesner and Julius Sachs. Remarks on the sleep movements of certain plants and the mechanism of tendril curvature. Is experimenting with Porlieria.

Has visited K. G. Semper’s laboratory.

Is sending CD the seeds of a beautiful Cassia given to him by a friend. He sketched the unripe fruit a few months ago. This plant is rare in the area around Sta Catharina. He has found their largest and most beautiful butterfly Callidryas manippe near this tree and its caterpillars living on its leaves. Comments on how remarkable it is to find a species limited to living on a single tree in so large an area.

Thanks CD for his kind letter and accepts his offer of a writing machine.

Thanks CD for his condolences. Reminisces about their youth.

On the death of his naturalist friend, W. C. Hewitson.

Notes Julius Sachs’s opinion on the heliotropism of moulds: he can see no use in the response.

C. E. Stahl is working on swarm spores which can be made both helio- and apheliotropic.

Sachs has told him that some ferns sleep, and he suspects that some grasses may move.

Sachs also feels they may be working at bloom from a wrong point of view and suggests leaves may need to keep dry in order to keep their stomata open.

Idea has struck him that might be of use to CD: that rapid changes during growth as in some plants and in insect metamorphosis may bear analogy to the slower changes resulting in the formation of new varieties.

Experiments on effects of removing "bloom" from leaves and fruit.

CD named corresponding member of the Royal Bavarian Academy of Science. [See 11634.]

Explains that it was his son, Grant, who sent JAA’s article defending Darwinian origins of morality.

Comments on CD’s Canadian admirers

and asks whether Grant may visit CD at Down.

Burdened with Anniversary Address to the Royal Society.

Quips that even Huxley is running out of speeches.

Sachs jumps to the conclusion twiners and tendrils are similar from the Menispermum that twined without a stick. Akebia grows down a stick; not only the free end is involved.

Sleeping plants.