Summary

Discusses his health following a visit to Dr C[lark?]. Has made an appointment for CD.

Summary

Sends table showing relative force of impact of weight dropped on a plane inclined at different angles.

Summary

Has heard that Mr Allen wishes to let his house and thinks it probable that it would suit his son [Francis]. Asks whether he may have refusal of it.

Summary

Thanks KM for gift of his "great work on Capital" [2d German ed. of Das Kapital]. Wishes he understood more of "the deep & important subject of political Economy".

Summary

Hears from Frank [Darwin] that Drosera behaves perversely. Suggests that motor influence may move longitudinally away from the excited glands.

Summary

Information for CD’s use in investigating digestion by Drosera.

Summary

Sends tracing of ancient Egyptian illustration of dogs and cattle.

Summary

CD thinks GHD’s letter is an excellent clarification [of CD’s conjectural view on the elimination of useless parts in species], but does not want to publish it as his [CD’s] own. Asks GHD to think carefully before he publishes it.

Summary

Sends formula for pure pepsin for experiments on digestion of Drosera, and information on legumin. Will send chlorophyll soon.

Summary

Sends, with CD’s approval, a clarification of CD’s explanation of how useless organs might diminish [see 9061]. Using Quetelet’s law of normal distribution GHD shows how horns of cattle, having become useless, would gradually diminish and finally disappear.

Summary

Has decided to send the letter ["Variation of organs", Nature 8 (1873): 505].

Writes of his poor health and problems of settling in at Trinity.

Summary

Mimosa prostrata, described by John Lindley as M. marginata, native of Brazil.

Who supplies CD with distilled water and chemicals?

Summary

Thanks CD for copies of his books.

Sends chlorophyll extract [for CD’s work on Drosera digestion].

Summary

Requests a piece of the most sensitive litmus paper in order to test the secretions of minute hairs of plants which catch minute flies. [See 9098.]

Summary

On CD’s paper ["Complemental males of certain cirripedes", Collected papers 2: 177–82].

Comments on paper by W. H. Dallinger and J. J. Drysdale ["Life history of a Cercomonad", Mon. Microsc. J. 10 (1873): 53–8].

Discusses origin of life, the Gastraea theory and concept that primary germ layers are homologous in all animals. Notes similar views of E. Ray Lankester ["On the primitive cell-layers of the embryo", Ann. & Mag. Nat. Hist. 4th ser. 11 (1873): 321–38].

Reception of Darwinism in Germany.

Summary

Thanks AB for his review of Expression [May 1873, in The senses and the intellect, 3d ed. (1874), pp. 697–714]. Admits vagueness of some points. Has never grasped AB’s principle of spontaneity. But, as they look at everything so differently, it is not likely that they should agree closely.

A recent review by T. S. Baynes, [Edinburgh Rev. 137 (1873): 492–528] is "magnificently contemptuous" toward CD and many others.

Summary

Has not seen number of Botanical Bulletin with account of Apocynum.

Summary

The results of EF’s tests for acids in the secretion of Drosera are largely negative [see Insectivorous plants, p. 88].

Summary

Asks for details about microscope parts.

Wants FD to ask Hooker for species of Desmodium; CD believes he has found new movements.

Also ask whether Hooker has Drosophyllum.

Summary

Has got a cold, so will not go to Kew. Wrote to Hartnack about price of microscopes and describes own model. Told Hooker about Tisley Spiller’s microscope in Paris.