Discusses the power of land covered with snow to radiate heat.
Criticises CL's discussion of slavery [in Travels in North America (1845)]. A review of CL's book is in Gardeners' Chronicle.
Mentions John Lindley's views on carbonic acid gas and extinction;
refers to the discussion of multiple and single creations in Humboldt's Kosmos.
The origin of volcanic craters of elevation.
There is a popular demand for a new edition of Principles.
Praises palaeobotanical work of C. J. F. Bunbury.
Down. Bromley Kent
Please read this before you go. My dear Lyell
This is literally the first day, on which I have had any time to spare; & I
will amuse myself by beginning a letter to you, which you can read when you have
leisure; for now you must be very busy.— Firstly for the last subject,
mentioned between us, viz the radiation of snow, on which you say you are interested: my
Brother says I am wrong about colour, but I cannot yet give up a clear impression, I
have opposed to the colour-doctrine.— I find from Leslie, (in Ure) the radiating (& highest) power of
Lamp-black being called 100, and gold, silver, copper being 12; writing paper is 98,
plumbago 75 and ice is 85. From Wells, it appears,
that when swan-down (white enough, & the best known radiator) exposed to open
sky falls 16
I was delighted with your letter, in which you touch on slavery; I wish the same
feelings had been apparent in your published discussion.— But I will not write on this subject; I
There is a favourable, but not strong enough review on you, in Gardeners Chron: I am sorry to see, that Lindley abides by the Carbonic-acid-gas theory. By the way, I was much pleased by Lindley picking out my Extinction paragraphs & giving them uncurtailed: to my mind, putting the comparative rarity of existing species in the same category with extinction has removed a great weight; though of course it does not explain anything, it shows that, until we can explain comparative rarity, we ought not to feel any surprise at not explaining extinction.—
Have you seen Kosmos, I think you w
—I am much pleased to hear of the call for a new Edit. of the
Principles: what glorious good that work has
done.— I fear this time you will not be amongst the old rocks; how I sh
—I am very glad to hear, what progress Bunbury is making in fossil Botany:
there is a fine Hiatus for him to fill up in this country: I will certainly call on him
this winter. How I shall miss my break-fast calls on
I will tell Murray to send the 3
- f1 905.f1CD has drawn a line connecting this message to the sentence, in the first paragraph, beginning ‘Firstly for the last subject,’.
- f2 905.f2John Leslie.
- f3 905.f3Ure 1823, pp. 262–3, in which Andrew Ure described Leslie's experiments on radiation and gave the figures as presented by CD. CD's copy is in the Darwin Library–CUL.
- f4 905.f4Wells 1815.
- f5 905.f5P. Wilson 1788.
- f6 905.f6C. Lyell 1845a, 1: 181–95.
- f7 905.f7In Journal of researches 2d ed., pp. 499–500, CD expanded the passages on Brazilian slavery from the first edition (pp. 27–8).
- f8 905.f8C. Lyell 1845a, 1: 184–5. In his copy CD has marked the first passage with ‘!’ and underlined the second in pencil.
- f9 905.f9Gardeners' Chronicle and Agricultural Gazette, no. 34, 23 August 1845, p. 578. John Lindley, the editor, upheld Adolphe Théodore Brongniart's carbonic-acid-gas theory. See letter to Charles Lyell, [30 July – 2 August 1845], n. 9.
- f10 905.f10Gardeners' Chronicle and Agricultural Gazette, no. 33, 16 August 1845, p. 563. The discussion of the causes of extinction of species is in Journal ofresearches 2d ed., pp. 173–6. See letter to Charles Lyell, [5 July 1845], n. 5.
- f11 905.f11Humboldt 1845–62.
- f12 905.f12Volcanic islands, pp. 93–6; Journal of researches 2d ed., pp. 484–5.
- f13 905.f13C. Lyell 1847.
- f14 905.f14That is, on his forthcoming visit to the United States.
- f15 905.f15Charles James Fox Bunbury. See letter from Charles Lyell, [after 2 August 1845], n. 6, for CD's meetings with him.