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Any facts would be useful, especially any showing that savages take any care in breeding their animals, or in rejecting the bad and preserving the good; or any fancies which they may have that one coloured or marked dog, etc., is better than another. I have already collected much on this head, but am greedy for facts. You will at once see their bearing on variation under domestication.
Hardly anything in your letter has pleased me more than about s.e.xual selection. In my larger MS. (and indeed in the "Origin" with respect to the tuft of hairs on the breast of the c.o.c.k-turkey) I have guarded myself against going too far; but I did not at all know that male and female b.u.t.terflies haunted rather different sites. If I had to cut up myself in a review I would have [worried?] and quizzed s.e.xual selection; therefore, though I am fully convinced that it is largely true, you may imagine how pleased I am at what you say on your belief. This part of your letter to me is a quintessence of richness. The fact about b.u.t.terflies attracted by coloured sepals is another good fact, worth its weight in gold. It would have delighted the heart of old Christian C.
Sprengel--now many years in his grave.
I am glad to hear that you have specially attended to "mimetic"
a.n.a.logies--a most curious subject; I hope you publish on it. I have for a long time wished to know whether what Dr. Collingwood a.s.serts is true--that the most striking cases generally occur between insects inhabiting the same country.
LETTER 124. TO F.W. HUTTON. Down, April 20th [1861].
I hope that you will permit me to thank you for sending me a copy of your paper in "The Geologist" (124/1. In a letter to Hooker (April 23rd?, 1861) Darwin refers to Hutton's review as "very original," and adds that Hutton is "one of the very few who see that the change of species cannot be directly proved..." ("Life and Letters," II., page 362). The review appeared in "The Geologist" (afterwards known as "The Geological Magazine") for 1861, pages 132-6 and 183-8. A letter on "Difficulties of Darwinism" is published in the same volume of "The Geologist," page 286.), and at the same time to express my opinion that you have done the subject a real service by the highly original, striking, and condensed manner with which you have put the case. I am actually weary of telling people that I do not pretend to adduce direct evidence of one species changing into another, but that I believe that this view in the main is correct, because so many phenomena can be thus grouped together and explained. But it is generally of no use; I cannot make persons see this. I generally throw in their teeth the universally admitted theory of the undulation of light,--neither the undulation nor the very existence of ether being proved, yet admitted because the view explains so much. You are one of the very few who have seen this, and have now put it most forcibly and clearly. I am much pleased to see how carefully you have read my book, and, what is far more important, reflected on so many points with an independent spirit. As I am deeply interested in the subject (and I hope not exclusively under a personal point of view) I could not resist venturing to thank you for the right good service which you have done.
I need hardly say that this note requires no answer.
LETTER 125. TO J.D. HOOKER.
(125/1. Parts of this letter are published in "Life and Letters," II., page 362.)
Down, [April] 23rd, [1861].
I have been much interested by Bentham's paper in the "Natural History Review," but it would not, of course, from familiarity, strike you as it did me. (125/2. This refers to Bentham's paper "On the Species and Genera of Plants, etc." "Nat. Hist. Review," April, 1861, page 133, which is founded on, or extracted from, a paper read before the Linn.
Soc., November 15th, 1858. It had been originally set down to be read on July 1st, 1858, but gave way to the papers of Darwin and Wallace.
Mr. Bentham has described ("Life and Letters," II., page 294) how he reluctantly cancelled the parts urging "original fixity" of specific type, and the remainder seems not to have been published except in the above-quoted paper in the "Nat. Hist. Review.") I liked the whole--all the facts on the nature of close and varying species. Good Heavens! to think of the British botanists turning up their noses and saying that he knows nothing of British plants! I was also pleased at his remarks on cla.s.sification, because it showed me that I wrote truly on this subject in the "Origin." I saw Bentham at the Linnean Society, and had some talk with him and Lubbock and Edgeworth, Wallich, and several others. I asked Bentham to give us his ideas of species; whether partially with us or dead against us, he would write excellent matter. He made no answer, but his manner made me think he might do so if urged--so do you attack him.
Every one was speaking with affection and anxiety of Henslow. I dined with Bell at the Linnean Club, and liked my dinner...dining-out is such a novelty to me that I enjoyed it. Bell has a real good heart. I liked Rolleston's paper, but I never read anything so obscure and not self-evident as his "canons." (125/3. See "Nat. Hist. Review," 1861, page 206. The paper is "On the Brain of the Orang Utang," and forms part of the bitter controversy of this period to which reference occurs in letters to Huxley and elsewhere in these volumes. Rolleston's work is quoted by Huxley ("Man's Place in Nature," page 117) as part of the crus.h.i.+ng refutation of Owen's position. Mr. Huxley's letter referred to above is no doubt that in the "Athenaeum," April 13th, 1861, page 498; it is certainly severe, but to those who know Mr. Huxley's "Succinct History of the Controversy," etc. ("Man's Place in Nature," page 113), it will not seem too severe.) I had a dim perception of the truth of your profound remark--that he wrote in fear and trembling "of G.o.d, man, and monkeys," but I would alter it into "G.o.d, man, Owen, and monkeys."
Huxley's letter was truculent, and I see that every one thinks it too truculent; but in simple truth I am become quite demoniacal about Owen--worse than Huxley; and I told Huxley that I should put myself under his care to be rendered milder. But I mean to try and get more angelic in my feelings; yet I never shall forget his cordial shake of the hand, when he was writing as spitefully as he possibly could against me. But I have always thought that you have more cause than I to be demoniacally inclined towards him. Bell told me that Owen says that the editor mutilated his article in the "Edinburgh Review" (125/4. This is the only instance, with which we are acquainted, of Owen's acknowledging the authors.h.i.+p of the "Edinburgh Review" article.), and Bell seemed to think it was rendered more spiteful by the Editor; perhaps the opposite view is as probable. Oh, dear! this does not look like becoming more angelic in my temper!
I had a splendid long talk with Lyell (you may guess how splendid, for he was many times on his knees, with elbows on the sofa) (125/5. Mr.
Darwin often spoke of Sir Charles Lyell's tendency to take curious att.i.tudes when excited.) on his work in France: he seems to have done capital work in making out the age of the celt-bearing beds, but the case gets more and more complicated. All, however, tends to greater and greater antiquity of man. The s.h.i.+ngle beds seem to be estuary deposits.
I called on R. Chambers at his very nice house in St. John's Wood, and had a very pleasant half-hour's talk--he is really a capital fellow. He made one good remark and chuckled over it: that the laymen universally had treated the controversy on the "Essays and Reviews" as a merely professional subject, and had not joined in it but had left it to the clergy. I shall be anxious for your next letter about Henslow. Farewell, with sincere sympathy, my old friend.
P.S.--We are very much obliged for "London Review." We like reading much of it, and the science is incomparably better than in the "Athenaeum."
You shall not go on very long sending it, as you will be ruined by pennies and trouble; but I am under a horrid spell to the "Athenaeum"
and "Gardeners' Chronicle," both of which are intolerably dull, but I have taken them in for so many years that I cannot give them up.
The "Cottage Gardener," for my purpose, is now far better than the "Gardeners' Chronicle."
LETTER 126. TO J.L.A. DE QUATREf.a.gES. Down, April 25 [1861].
I received this morning your "Unite de l'Espece Humaine" [published in 1861], and most sincerely do I thank you for this your very kind present. I had heard of and been recommended to read your articles, but, not knowing that they were separately published, did not know how to get them. So your present is most acceptable, and I am very anxious to see your views on the whole subject of species and variation; and I am certain to derive much benefit from your work. In cutting the pages I observe that you have most kindly mentioned my work several times. My views spread slowly in England and America; and I am much surprised to find them most commonly accepted by geologists, next by botanists, and least by zoologists. I am much pleased that the younger and middle-aged geologists are coming round, for the arguments from Geology have always seemed strongest against me. Not one of the older geologists (except Lyell) has been even shaken in his views of the eternal immutability of species. But so many of the younger men are turning round with zeal that I look to the future with some confidence. I am now at work on "Variation under Domestication," but make slow progress--it is such tedious work comparing skeletons.
With very sincere thanks for the kind sympathy which you have always shown me, and with much respect,...
P.S.--I have lately read M. Naudin's paper (126/1. Naudin's paper ("Revue Horticole," 1852) is mentioned in the "Historical Sketch"
prefixed to the later editions of the "Origin" (Edition VI., page xix).
Naudin insisted that species are formed in a manner a.n.a.logous to the production of varieties by cultivators, i.e., by selection, "but he does not show how selection acts under nature." In the "Life and Letters,"
II., page 246, Darwin, speaking of Naudin's work, says: "Decaisne seems to think he gives my whole theory."), but it does not seem to me to antic.i.p.ate me, as he does not show how selection could be applied under nature; but an obscure writer (126/2. The obscure writer is Patrick Matthew (see the "Historical Sketch" in the "Origin.") on forest trees, in 1830, in Scotland, most expressly and clearly antic.i.p.ated my views--though he put the case so briefly that no single person ever noticed the scattered pa.s.sages in his book.
LETTER 127. TO L. HINDMARSH.
(127/1. The following letter was in reply to one from Mr. Hindmarsh, to whom Mr. Darwin had written asking for information on the average number of animals killed each year in the Chillingham herd. The object of the request was to obtain information which might throw light on the rate of increase of the cattle relatively to those on the pampas of South America. Mr. Hindmarsh had contributed a paper "On the Wild Cattle of Chillingham Park" to the "Annals and Mag. Nat. Hist." Volume II., page 274, 1839.)
Down, May 12th [1861].
I thank you sincerely for your prompt and great kindness, and return the letter, which I have been very glad to see and have had copied.
The increase is more rapid than I antic.i.p.ated, but it seems rather conjectural; I had hoped that in so interesting a case some exact record had been kept. The number of births, or of calves reared till they followed their mothers, would perhaps have been the best datum. From Mr. Hardy's letter I infer that ten must be annually born to make up the deaths from various causes. In Paraguay, Azara states that in a herd of 4,000, from 1,000 to 1,300 are reared; but then, though they do not kill calves, but castrate the young bulls, no doubt the oxen would be killed earlier than the cows, so that the herd would contain probably more of the female s.e.x than the herd at Chillingham. There is not apparently any record whether more young bulls are killed than cows. I am surprised that Lord Tankerville does not have an exact record kept of deaths and s.e.xes and births: after a dozen years it would be an interesting statistical record to the naturalist and agriculturist.
(PLATE: PROFESSOR HENSLOW.)
LETTER 128. TO J.D. HOOKER.
(128/1. The death of Professor Henslow (who was Sir J.D. Hooker's father-in-law) occurred on May 16th, 1861.)
Down, May 24th [1861].
Thanks for your two notes. I am glad that the burial is over, and sincerely sympathise and can most fully understand your feelings at your loss.
I grieve to think how little I saw of Henslow for many years. With respect to a biography of Henslow, I cannot help feeling rather doubtful, on the principle that a biography could not do him justice.
His letters were generally written in a hurry, and I fear he did not keep any journal or diary. If there were any vivid materials to describe his life as parish priest, and manner of managing the poor, it would be very good.
I am never very sanguine on literary projects. I cannot help fearing his Life might turn out flat. There can hardly be marked incidents to describe. I sincerely hope that I take a wrong and gloomy view, but I cannot help fearing--I would rather see no Life than one that would interest very few. It will be a pleasure and duty in me to consider what I can recollect; but at present I can think of scarcely anything. The equability and perfection of Henslow's whole character, I should think, would make it very difficult for any one to pourtray him. I have been thinking about Henslow all day a good deal, but the more I think the less I can think of to write down. It is quite a new style for me to set about, but I will continue to think what I could say to give any, however imperfect, notion of him in the old Cambridge days.
Pray give my kindest remembrances to L. Jenyns (128/2. The Rev. Leonard Jenyns (afterwards Blomefield) undertook the "Life" of Henslow, to which Darwin contributed a characteristic and delightful sketch. See Letter 17.), who is often a.s.sociated with my recollection of those old happy days.
LETTER 129. HENRY FAWCETT TO CHARLES DARWIN.
(129/1. It was in reply to the following letter that Darwin wrote to Fawcett: "You could not possibly have told me anything which would have given me more satisfaction than what you say about Mr. Mill's opinion.
Until your review appeared I began to think that perhaps I did not understand at all how to reason scientifically." ("Life of Henry Fawcett," by Leslie Stephen, 1885, page 100.)
Bodenham, Salisbury, July 16th [1861].
I feel that I ought not to have so long delayed writing to thank you for your very kind letter to me about my article on your book in "Macmillan's Magazine."
I was particularly anxious to point out that the method of investigation pursued was in every respect philosophically correct. I was spending an evening last week with my friend Mr. John Stuart Mill, and I am sure you will be pleased to hear from such an authority that he considers that your reasoning throughout is in the most exact accordance with the strict principles of logic. He also says the method of investigation you have followed is the only one proper to such a subject.
It is easy for an antagonistic reviewer, when he finds it difficult to answer your arguments, to attempt to dispose of the whole matter by uttering some such commonplace as "This is not a Baconian induction."
I expect shortly to be spending a few days in your neighbourhood, and if I should not be intruding upon you, I should esteem it a great favour if you will allow me to call on you, and have half an hour's conversation with you.
As far as I am personally concerned, I am sure I ought to be grateful to you, for since my accident nothing has given me so much pleasure as the perusal of your book. Such studies are now a great resource to me.
LETTER 130. TO C. LYELL. 2, Hesketh Terrace, Torquay [August 2nd, 1861].
I declare that you read the reviews on the "Origin" more carefully than I do. I agree with all your remarks. The point of correlation struck me as well put, and on varieties growing together; but I have already begun to put things in train for information on this latter head, on which Bronn also enlarges. With respect to s.e.xuality, I have often speculated on it, and have always concluded that we are too ignorant to speculate: no physiologist can conjecture why the two elements go to form a new being, and, more than that, why nature strives at uniting the two elements from two individuals. What I am now working at in my orchids is an admirable ill.u.s.tration of the law. I should certainly conclude that all s.e.xuality had descended from one prototype. Do you not underrate the degree of lowness of organisation in which s.e.xuality occurs--viz., in Hydra, and still lower in some of the one-celled free confervae which "conjugate," which good judges (Thwaites) believe is the simplest form of true s.e.xual generation? (130/1. See Letter 97.) But the whole case is a mystery.