The stone hatchets are a great muddle. Would like a copy of Jacques Boucher [de Crèvecoeur] de Perthes's book [Antiquités Celtiques et antédiluviennes (1847–64)].
Is studying action of carbonate of ammonia on Drosera. Asks if this has been done.
My dear Henslow.
We return home this afternoon, as my poor dear girl is now just strong enough to bear
removal.— I received your letter forwarded from Down this
morning, & very much obliged I am to you for having taken so much trouble about
I never heard of such a muddle about the stone Hatchets. If
you are sure that you can spare & know no one else who would make better use of
B. de Perthes Book, I sh
On my return home I will settle about the seeds.—
I am still at work on Drosera. I asked you about the moving red matter in the cells, & now for the chance of your knowing, I want to ask one other question; but please observe if I get no answer I shall understand that you do not know.— My question is whether, observations have been made on the action of weak solutions of Carb. of Ammonia (or of other salts) on the fluid contents of the cells of living plants.— I find that C. of Ammonia has a remarkable & rapid action when absorbed by the roots.
My dear Henslow | Ever yours gratefully | C. Darwin
- f1 2981.f1The physician Charles Robert Bree had attacked Origin in a recently published book (Bree 1860). See letter to J. S. Henslow, 26 October .
- f2 2981.f2See letter to J. S. Henslow, 26 October , in which CD discussed Henslow's letter published in the Athenæum, 20 October 1860, p. 516. Henslow had written a further letter, published in the Athenæum, 3 November 1860, pp. 592--3. He again discussed the confusion about whether the gravel beds had been disturbed or not and showed evidence of the action of water.
- f3 2981.f3CD probably refers to the second volume of Boucher de Cr`evecoeur de Perthes 1847--64. CD had discussed the implications of Jacques Boucher de Cr`evecoeur de Perthes's work with Joseph Dalton Hooker, and indicated that he had already looked at one of his volumes. See Correspondence vol. 7, letter to J. D. Hooker, 22 [June 1859].