when you get it, or after potting, shows signs of drooping, I should suggest clipping off the older leaves to check evaporation : having found this a good plan with beets, &c. In the same box with the hybrid there is another carrot. This is for comparison, it having been from the same seed and grafted (upon the crown) at the same time as the originally red half of the hybrid. I am doubtful about the potatoes I sent. On looking over a number of 'red flukes,' I find some here and there are mottled. At any rate, I shall try other varieties next year, and not say anything about this doubtful case. I forgot to say that the hybrid carrot is the only specimen of longitudinal grafting which I tried with carrots, having been somewhat disheartened with this method by the persistent way in which beets and mangolds refuse to blend when grafted longitudinally. There have thus been no failures with carrots grafted in this way. If it is not too late, I may suggest that the passage in the 'Variation' about the deformity of the sternum in poultry had better be modified. I have this year tried some experiments upon Brahma chickens, and find that the deformity in question is caused by lazy habits of roosting-the constantly recurring pressure of the roost upon the cartilaginous sternum causing it to yield at the place where the pressure is exerted. The experiments consisted merely in confining some of a brood of young chickens in a place without any roost, and allowing the others to go about with all the March chickens. The former lot have the sternum quite straight, and the latter lot have it deeply notched. I write to thank you for the copy of the new edition of the 'Variation' which I received a few days ago. I am very glad to see that you have thought my views about rudimentary organs worth a place, and that you speak so well of them. The chapter on Pangenesis is admirable. The case is so strong, that it makes me more anxious than ever to get positive results in this year's experiments. I mean there seems less doubt than ever that such results must be obtainable if one hammers long enough. I did not know that there were so many cases of graft-hybridisation in potatoes. Perhaps it will be better this year to give one's main energies to other vegetables. I find that a German, Dr. Eimer, is on the scent of the jelly-fish, but he does not seem to have done much work as yet. It is arranged that I am to have a Friday evening at the Institution soon after Easter, to tell the people about my own work. From C. Darwin to G. J. Romanes. 6 Queen Anne Street: April 29, 1876. I must have the pleasure of saying that I have just heard that your lecture was a splendid success in all ways. I further hear that you were as cool as the Arctic regions. It is evident that there is no occasion for you to feel your pulse under the circumstances which we discussed. Yours very sincerely, A To C. Darwin, Esq. I write to thank you for the slip about graft hybrids, and to say that as yet I have obtained no results myself. This place is too far north to admit of the seeds ripening properly after the plants have been thrown back several weeks by the operation. This applies especially to onions, so next year-the neck of Medusæ having now been broken-I intend to wait in London till all the grafting and planting out is finished. I do not think you will regret my not having followed such a course this year when you come to read the paper I am now writing. I never did such a successful four months' work, and if as many years suffice to answer all the burning questions that are raised by it, I think they will require to be years well spent. And this makes me remember that I have to apologise for the inordinate time I have kept your copy of Professor Häckel's essay on Perigenesis. Since you sent it I have scarcely had any time for reading, and as you said there was no hurry about returning it, I have let it stand over till this paper is off my hands. Lankester seems to have doubled up Slade in fine style. I suppose the latter has always trusted to his customers not liking to resort to violent methods. His defence in the Times' about the locked slates was unusually weak. 'Once a thief always a thief' applies, I suppose, to his case; but it is hard to understand how Wallace could not have seen him inverting the table on his head. In this we have another of those perplexing contradictions with which the whole subject appears to be teeming. I do hope next winter to settle for myself the simple issue between Ghost versus Goose. Very sincerely and most respectfully yours, To C. Darwin, Esq. 18 Cornwall Terrace. Professor Häckel's paper on the Medusæ is called 'Beitrag zur Naturgeschichte der Hydromedusen ' (Leipzig, 1865). Professor Huxley has lent me his copy, but says he wants it returned in a week or two. I ought certainly to have the work by me next summer, so I thought that if you happen to have it and can spare it till next autumn, I need not send to Germany for it, remembering what you said when I last saw you. I should also much like to see the other paper of Häckel's about cutting up the ova of Medusa. I have an idea that you are afraid I am neglecting Pangenesis for Medusæ. If so, I should like to assure you that such is not the case. Last year I gave more time to the former than to the latter inquiry; and although the results proved very disproportionate, this was only due to the fact that the one line of work was more difficult than the other. However, I always expected that the first year would require to be spent in breaking up the ground, and I am quite satisfied with the experience which this work has brought me. I confess, however, that but for personal reasons I should have postponed Pangenesis and worked the Medusæ right through in one year. There is a glitter about immediate results. which is very alluring. From C. Darwin to G. J. Romanes. I will send the books off by railway on Monday or Tuesday. You may keep that on Medusæ until I ask for it, which will probably be never. That on Siphonophora I should like to have back at some future time. So far from thinking that you have neglected Pangenesis, I have been astonished and pleased that your splendid work on the jelly-fishes did not make you throw every other subject to the dogs. Even if your experiments turn out a failure, I believe that there will be some compensation in the skill you will have acquired. P.S. I have been having more correspondence with Galton about Pangenesis, and my confusion is more confounded with respect to the points in which he differs from me. About this time Mr. Romanes made the acquaintance of Mr. Herbert Spencer and also that of Mr. G. H. Lewes, and of the wonderful woman known to the outer world as George Eliot, and to a small circle of friends as Mrs. Lewes. Mr. Romanes was one of the favoured few who were allowed to join the charmed circle at the Priory on Sunday afternoons. He enjoyed the few talks he had with George Eliot, and, amongst other reminiscences, E |