The two following letters to Lyell, though of later date (June, 1848), bear on the same subject:—

"I was at the evening meeting [of the Geological Society], but did not get within hail of you. What a fool (though I must say a very amusing one) — did make of himself. Your speech was refreshing after it, and was well characterized by Fox (my cousin) in three words—'What a contrast!' That struck me as a capital speculation about the Wealden Continent going down. I did not hear what you settled at the Council; I was quite wearied out and bewildered. I find Smith, of Jordan Hill, has a much worse opinion of R. Chambers's book than even I have. Chambers has piqued me a little ('Ancient Sea Margins, 1848.' The words quoted by my father should be "the mobility of the land was an ascendant idea."); he says I 'propound' and 'profess my belief' that Glen Roy is marine, and that the idea was accepted because the 'mobility of the land was the ascendant idea of the day.' He adds some very faint UPPER lines in Glen Spean (seen, by the way, by Agassiz), and has shown that Milne and Kemp are right in there being horizontal aqueous markings (NOT at coincident levels with those of Glen Roy) in other parts of Scotland at great heights, and he adds several other cases. This is the whole of his addition to the data. He not only takes my line of argument from the buttresses and terraces below the lower shelf and some other arguments (without acknowledgment), but he sneers at all his predecessors not having perceived the importance of the short portions of lines intermediate between the chief ones in Glen Roy; whereas I commence the description of them with saying, that 'perceiving their importance, I examined them with scrupulous care,' and expatiate at considerable length on them. I have indirectly told him I do not think he has quite claims to consider that he alone (which he pretty directly asserts) has solved the problem of Glen Roy. With respect to the terraces at lower levels coincident in height all round Scotland and England, I am inclined to believe he shows some little probability of there being some leading ones coincident, but much more exact evidence is required. Would you believe it credible? he advances as a probable solution to account for the rise of Great Britain that in some great ocean one-twentieth of the bottom of the whole aqueous surface of the globe has sunk in (he does not say where he puts it) for a thickness of half a mile, and this he has calculated would make an apparent rise of 130 feet."

CHARLES DARWIN TO C. LYELL. Down [June, 1848].

My dear Lyell,

Out of justice to Chambers I must trouble you with one line to say, as far as I am personally concerned in Glen Roy, he has made the amende honorable, and pleads guilty through inadvertency of taking my two lines of arguments and facts without acknowledgment. He concluded by saying he "came to the same point by an independent course of inquiry, which in a small degree excuses this inadvertency." His letter altogether shows a very good disposition, and says he is "much gratified with the MEASURED approbation which you bestow, etc." I am heartily glad I was able to say in truth that I thought he had done good service in calling more attention to the subject of the terraces. He protests it is unfair to call the sinking of the sea his theory, for that he with care always speaks of mere change of level, and this is quite true; but the one section in which he shows how he conceives the sea might sink is so astonishing, that I believe it will with others, as with me, more than counterbalance his previous caution. I hope that you may think better of the book than I do.

Yours most truly, C. DARWIN.

CHARLES DARWIN TO J.D. HOOKER. October 6th, 1848.

...I have lately been trying to get up an agitation (but I shall not succeed, and indeed doubt whether I have time and strength to go on with it), against the practice of Naturalists appending for perpetuity the name of the FIRST describer to species. I look at this as a direct premium to hasty work, to NAMING instead of DESCRIBING. A species ought to have a name so well known that the addition of the author's name would be superfluous, and a [piece] of empty vanity. (His contempt for the self-regarding spirit in a naturalist is illustrated by an anecdote, for which I am indebted to Rev. L. Blomefield. After speaking of my father's love of Entomology at Cambridge, Mr. Blomefield continues:—"He occasionally came over from Cambridge to my Vicarage at Swaffham Bulbeck, and we went out together to collect insects in the woods at Bottisham Hall, close at hand, or made longer excursions in the Fens. On one occasion he captured in a large bag net, with which he used vigorously to sweep the weeds and long grass, a rare coleopterous insect, one of the Lepturidae, which I myself had never taken in Cambridgeshire. He was pleased with his capture, and of course carried it home in triumph. Some years afterwards, the voyage of the 'Beagle' having been made in the interim, talking over old times with him, I reverted to this circumstance, and asked if he remembered it. 'Oh, yes,' (he said,) 'I remember it well; and I was selfish enough to keep the specimen, when you were collecting materials for a Fauna of Cambridgeshire, and for a local museum in the Philosophical Society.' He followed this up with some remarks on the pettiness of collectors, who aimed at nothing beyond filling their cabinets with rare things.") At present, it would not do to give mere specific names; but I think Zoologists might open the road to the omission, by referring to good systematic writers instead of to first describers. Botany, I fancy, has not suffered so much as Zoology from mere NAMING; the characters, fortunately, are more obscure. Have you ever thought on this point? Why should Naturalists append their own names to new species, when Mineralogists and Chemists do not do so to new substances? When you write to Falconer pray remember me affectionately to him. I grieve most sincerely to hear that he has been ill, my dear Hooker, God bless you, and fare you well.

Your sincere friend, C. DARWIN.

CHARLES DARWIN TO HUGH STRICKLAND. (Hugh Edwin Strickland, M.A., F.R.S., was born 2nd of March, 1811, and educated at Rugby, under Arnold, and at Oriel College, Oxford. In 1835 and 1836 he travelled through Europe to the Levant with W.J. Hamilton, the geologist, wintering in Asia Minor. In 1841 he brought the subject of Natural History Nomenclature before the British Association, and prepared the Code of Rules for Zoological Nomenclature, now known by his name—the principles of which are very generally adopted. In 1843 he was one of the founders (if not the original projector) of the Ray Society. In 1845 he married the second daughter of Sir William Jardine, Bart. In 1850 he was appointed, in consequence of Buckland's illness, Deputy Reader in Geology at Oxford. His promising career was suddenly cut short on September 14, 1853, when, while geologizing in a railway cutting between Retford and Gainsborough, he was run over by a train and instantly killed. A memoir of him and a reprint of his principal contributions to journals was published by Sir William Jardine in 1858; but he was also the author of 'The Dodo and its Kindred' (1848); 'Bibliographia Zoologiae' (the latter in conjunction with Louis Agassiz, and issued by the Ray Society); 'Ornithological Synonyms' (one volume only published, and that posthumously). A catalogue of his ornithological collection, given by his widow to the University of Cambridge, was compiled by Mr. Salvin, and published in 1882. (I am indebted to Prof. Newton for the above note.)) Down, January 29th [1849].