Has forwarded some plants of Nitella opaca. Has observed their struggle for existence for several years in the gravel-pit pools at Mitcham.
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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.
Has forwarded some plants of Nitella opaca. Has observed their struggle for existence for several years in the gravel-pit pools at Mitcham.
Thanks HG for kind offer. CD is not well enough to examine the Utricularia, but will try to look at the Nitella.
Thanks HG for specimen of Mitella.
CD has tried effects of carbonate of ammonia on chlorophyll grains, but his observations are hardly trustworthy. He finds stooping over the microscope affects his heart.