One thirty-thousandth of a grain of human hair inflects a single Drosera hair. Astonished by his results so he is not publishing until next summer. [Not published until 1875, Insectivorous plants. See ch. 2 for observations on inflection.]
Wants to study effects of acids on live Dionaea. Oliver should do their anatomy. Corresponding with chemical physiologists about carbonate of ammonia on roots.
Down Bromley Kent
My dear M
In writing out my paper yesterday I was so astounded at my results that I have got
fairly frightened, & have determined to finish my paper, but to publish nothing
until next summer I shall have retested my
results & tried some of them in another way: so that there is no hurry about the
Drawings. If there are good specimens, I sh
Most heartily do I thank you for your most kind & valuable
assistance.— If I could get one or two plants of Dionæa I would
experimentise on them; but I shall not of course attempt the anatomy; & if you
thought you would undertake the subject, I would not interfere in any way, except by
bare allusions to what I have seen; but it is so important to me about the mottling or
segregation of colour, that I sh
I have been corresponding with some of the chemical physiologists & as far as I can find out the curious action of the C. of Ammonia on the roots of plants has not been observed.—
With cordial thanks for all your kindness | My dear M
P.S. | Can you tell me name of Plant, which grew out of doors in my Fathers garden,
2 to 4 ft high—considerably branched, died down (I think) in
winter, bore many minute almost white or very pale pink flowers, &
which flowers caught a multitude of flies
Prolonged pressure alone causes movement.
- f1 2985.f1Dated by the relationship to the letter to Daniel Oliver, 7 November .
- f2 2985.f2CD's paper on Drosera was delivered at a meeting of the Philosophical Club of the Royal Society on 21 February 1861 (Bonney 1919, p. 154). It was not published, but CD ultimately included his earlier material in Insectivorous plants. His index for the paper is in DAR 54: 1.
- f3 2985.f3CD had asked Oliver to find out whether Walter Hood Fitch would make drawings of Drosera for him (see letter to Daniel Oliver, 7 November ).
- f4 2985.f4Charles William Crocker was the foreman in the propagating department at the Royal Botanic Gardens, Kew.
- f5 2985.f5Robert Waring Darwin, CD's father, had been a keen gardener who cultivated a variety of rare and unusual plants in the gardens of The Mount, the Darwin residence in Shrewsbury (see Correspondence vol. 1).
- f6 2985.f6See letter from Trenham Reeks, 15 November 1860.