Summary

Arranges to visit CD at Down.

Summary

Studying palaeontology, as the British Museum is closed.

Summary

His visit to Down.

Summary

Discusses the mental powers and habits of animals and considers that those of man are not separated from those of animals by any sort of fundamental barrier; the gulf seems formidable only from a self-conscious, human point of view. Man’s important distinction is his greater ability to act and respond independently of external stimuli, in consequence of his internal accumulation of personal experience.

Summary

Disputes Thomas Meehan’s observations on the hardiness of exposed buds, and believes bud-scales are for the protection of the bud-leaves. Reiterates his opinion that the phyllotaxy of a plant is determined by causes acting when the leaves are crowded into close contact. Attempts to explain how a different phyllotaxy on the upper and lower parts of the same shoot could have arisen.

Summary

Thanks for letter, in which CD cited [Anton] Kerner’s alpine observations.

Describes with diagrams the curious disposition of leaves on some Acacia twigs, and points out that his theory should account for these anomalies as well as normal cases.

Summary

Impressions of Duluth and the natural history of its environs.