Observations on Drosera: plants can distinguish minute quantities of nitrogenous substances.
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Observations on Drosera: plants can distinguish minute quantities of nitrogenous substances.
Owen wants to be civil, and sneer behind CD’s back.
Those, like Rudolph Wagner, who want to go halfway on theory, are "booked to go further".
Anatomy of orchids.
Huxley says K. E. von Baer goes "a great way with me".
CD has a low opinion of British entomologists.
Lyell’s ingenious difficulties with natural selection show he is in earnest.
Asks JDH to observe beetles and variation of stripes in mules on his Syrian tour.
Thanks JDH for agreeing to observe coats of asses and mules in Middle East.
Asks for observations on vigour of plants as JDH ascends mountains.
Ad hominem article in Athenæum [review of John Tyndall, Glaciers of the Alps, 1 Sept 1860, pp. 280–2].
Reports extensive experiments on Drosera.
Observations on orchid anatomy.
Welcomes JDH home from Middle Eastern expedition.
Preparing new edition of Origin and asks for JDH’s corrections and criticisms.
Third edition of Origin will answer reviewers.
Drosera experiments detailed.
Hopes for W. H. Harvey’s conversion.
Henry Fawcett’s article on Origin [Macmillan’s Mag. 3 (1860): 81–92] quotes JDH’s Oxford speech.
On JDH’s suggestions for new edition of Origin.
Gray’s Atlantic Monthly articles to be published [in England] as a pamphlet.
Analysing results of last spring’s Primula experiments, CD infers pollen of short-styled plants "suits" long-styled plants.
Sends JDH note on adaptation of an Australian Compositae for dispersal in dry climate. Is it too trivial to publish? [Collected papers 2: 36–8].
Feels his poor stomach "saved" him from overworking his head.
CD writes of his admiration for pollination contrivances in Gymnadenia. Ask George Bentham whether this plant should be removed from genus Orchis.