I have now read your article (The article, "Charles Darwin," in the series of "Scientific Worthies" ('Nature,' June 4, 1874). This admirable estimate of my father's work in science is given in the form of a comparison and contrast between Robert Brown and Charles Darwin.) in 'Nature,' and the last two paragraphs were not included in the slip sent before. I wrote yesterday and cannot remember exactly what I said, and now cannot be easy without again telling you how profoundly I have been gratified. Every one, I suppose, occasionally thinks that he has worked in vain, and when one of these fits overtakes me, I will think of your article, and if that does not dispel the evil spirit, I shall know that I am at the time a little bit insane, as we all are occasionally. What you say about Teleology ("Let us recognise Darwin's great service to Natural Science in bringing back to it Teleology: so that instead of Morphology versus Teleology, we shall have Morphology wedded to Teleology.") pleases me especially, and I do not think any one else has ever noticed the point. (See, however, Mr. Huxley's chapter on the 'Reception of the Origin of Species' in volume i.) I have always said you were the man to hit the nail on the head. Yours gratefully and affectionately, CH. DARWIN. [As a contribution to the history of the reception of the 'Origin of Species,' the meeting of the British Association in 1874, at Belfast, should be mentioned. It is memorable for Professor Tyndall's brilliant presidential address, in which a sketch of the history of Evolution is given culminating in an eloquent analysis of the 'Origin of Species,' and of the nature of its great success. With regard to Prof. Tyndall's address, Lyell wrote ('Life,' ii. page 455) congratulating my father on the meeting, "on which occasion you and your theory of Evolution may be fairly said to have had an ovation." In the same letter Sir Charles speaks of a paper (On the Ancient Volcanoes of the Highlands, 'Journal of Geological Soc.,' 1874.) of Professor Judd's, and it is to this that the following letter refers:] CHARLES DARWIN TO C. LYELL. Down, September 23, 1874. My dear Lyell, I suppose that you have returned, or will soon return, to London (Sir Charles Lyell returned from Scotland towards the end of September.); and, I hope, reinvigorated by your outing. In your last letter you spoke of Mr. Judd's paper on the Volcanoes of the Hebrides. I have just finished it, and to ease my mind must express my extreme admiration.