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.

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.

She and her father will not be idle working on worms for CD.

Change of address.