Comments on his examination of slides [of milk casein?] sent by CD.
Surprised by CD’s finding that a drop of one per cent hydrochloric acid stops digestion of albumen by Drosera.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Comments on his examination of slides [of milk casein?] sent by CD.
Surprised by CD’s finding that a drop of one per cent hydrochloric acid stops digestion of albumen by Drosera.
Reports negative results of his experiments on digestion of chlorophyll by Drosera and by animals. [See Insectivorous plants, p. 126.]
Sends references for chondrin.
On digestive powers of Drosera and those of higher animals.
Comments on expression on two halves of human face.
Responds to TLB’s views of serpent- and fire-worship.
Poison of venomous snakes.
Writes on the possible origin of serpent-worship.
Is glad CD does not think his view regarding the two sides of the face is erroneous.
Encloses, for examination, residue from skim-milk which has been on the glands of Drosera. Asks TLB to confirm his views on action of Drosera secretion on milk. Asks about effects of pepsin and hydrochloric acid in digestive juice.
CD responds to information about residue of milk digested by Drosera. Is obliged for information on strength of acids and albumen and now has little doubt acid had impaired the leaves. Awaits word on pepsin and papaw juice.
Encloses a tracing of a portrait of John Bunyan showing the differences of the two sides of the face.
Observations of effect of pepsin and hydrochloric acid on urea indicate that it is not digested [by Drosera].
Comments on digestive action of pepsin and hydrochloric acid.
Photograph of Rubens’ picture has not arrived.
Forwards a photograph he thought had been lost. Has noticed that the two sides of the face are often asymmetric in portrait busts and statues.
Discusses expression on two halves of the face. Mentions photograph [of picture by Rubens].
CD may keep the photograph of "the holy Mary of Egypt". TLB may have been led away by his imagination in thinking that one side of the face expressed repentance and the other devout joy.
Comments on David Ferrier’s observations on electrical stimulation of the brain. Extent of response relates to intensity of stimulus.
Crichton-Browne’s observations on the asymmetry of convolutions on the two sides of the brains of maniacs.