File:(Letter, Charles R. Darwin to John Burdon-Sanderson, May 14, (1874) page 4) (14502907471).jpg

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English: No known copyright restrictions. Please credit UBC Library as the image source. For more information, see digitalcollections.library.ubc.ca/cdm/about.


Description: Charles Darwin, Down to John Burdon-Sanderson. Compares the effects of pepsin and the fatty acids with the effects of the Drosera ferment on fibrin, Albumen and other substances. A.L.S. 1 p.

Transcript: water for 3 days, yields something soluble which acts energetically on Drosera, though the sharpest angles are not rounded by the secretions or by water; & I dare say it was this soluble matter which was dissolved in your experiments with globulin in pepsin and H.A. Can you send me a bit of fibro-cartilage from any animal, to try on Drosera? I am so ignorant I might blunder, & I have tried cartilage. Lastly can you spare me a grain or two, or if liquid, a few drops, of propionic, butyric, valerianic, or oleic Acid? I find immersion in olive oil has a potent effect on Drosera, & I suspect the fatty acids. Heaven forgive me for making so many requests & believe me yours very sincerely Ch. [Charles] Darwin

Creator: Darwin, Charles, 1809-1944

Date Created: [1874]-05-14

Source: Original Format: University of British Columbia Library. Woodward Biomedical Library. Charles Woodward Memorial Room. The Darwin-Burdon-Sanderson Letters.

Permanent URL: digitalcollections.library.ubc.ca/cdm/compoundobject/coll...
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Source https://www.flickr.com/photos/ubclibrary_digicentre/14502907471/
Author UBC Library Digitization Centre
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25 June 2014

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