Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.
Showing 1–10 of 10 items
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.
Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.
Is going to Switzerland, so analysis of Drosera washings will be delayed. Agrees with CD that solvent is probably pepsin.
CD’s discovery of acidity of Drosera secretion is interesting. EF explains how hydrochloric acid can be detected and identified. [See Insectivorous plants, p. 88.]
Has sent CD some pure distilled water for his Drosera experiments.
The results of EF’s tests for acids in the secretion of Drosera are largely negative [see Insectivorous plants, p. 88].
Sends some litmus paper for CD.
Sends some phosphates of lime free of animal matter [see Insectivorous plants, p. 109].
Bullfinches’ instinctive capacity for removing nectaries from cowslips.
Variation in bullfinches’ instinctive ability to remove nectaries and ovaries from cowslips.
Sends information CD requested on phosphate of ammonia and on nitrogenous substances produced during putrefaction of animal matter.