now unreservedly placed their papers in our hands, we think it would best promote the interests of science that a selection from them should be laid before the Linnean Society. Taken in the order of their dates, they consist of:— I. Extract from an unpublished Work on Species, by C. DARWIN, Esq., consisting of a portion of a Chapter entitled, "On the Variation of Organic Beings in a state of Nature; on the Natural Means of Selection; on the Comparison of Domestic Races and true Species." II. Abstract of a Letter from C. DARWIN, Esq., to Prof. ASA GRAY, Boston, US, dated Down, September 5th, 1857. III. On the Tendency of Varieties to depart indefinitely from the Original Type. By ALFRED RUSSEL WALLACE. The communication letter briefly describes the first two, and regarding Wallace's paper states that he sent to Darwin "with the expressed wish that it should be forwarded to Sir Charles Lyell, if Mr. Darwin thought it sufficiently novel and interesting. So highly did Mr. Darwin appreciate the value of the views therein set forth, that he proposed, in a letter to Sir Charles Lyell, to obtain Mr. Wallace's consent to allow the Essay to be published as soon as possible. Of this step we highly approved, provided Mr. Darwin did not withhold from the public, as he was strongly inclined to do (in favour of Mr. Wallace), the memoir which he had himself written on the same subject, and which, as before stated, one of us had perused in 1844, and the contents of which we had both of us been privy to for many years. On representing this to Mr. Darwin, he gave us permission to make what use we thought proper of his memoir, &c.; and in adopting our present course, of presenting it to the Linnean Society, we have explained to him that we are not solely considering the relative claims to priority of himself and his friend, but the interests of science generally". Impact of the publication The paper was reprinted and reviewed in several magazines including The Zoologist, whose judgement was "on asking myself, 'What does all this prove?' the only answer I could make was, 'A possibility'." It was commented on in some reviews and letters. The Linnean Society President Thomas Bell in his presidential report of May 1859 wrote that "The year which has passed has not, indeed, been marked