In the following, he refers to the above letter to the Athenæum:—

C. D. to J. D. Hooker. Saturday [May 11, 1863].

My dear Hooker,—You give good advice about not writing in newspapers; I have been gnashing my teeth at my own folly; and this not caused by ----'s sneers, which were so good that I almost enjoyed them. I have written once again to own to a certain extent of truth in what he says, and then if I am ever such a fool again, have no mercy on me. I have read the squib in Public Opinion;[237] it is capital; if there is more, and you have a copy, do lend it. It shows well that a scientific man had better be trampled in dirt than squabble.

In the following year (1864) he received the greatest honour which a scientific man can receive in this country, the Copley Medal of the Royal Society. It is presented at the Anniversary Meeting on St. Andrew's Day (Nov. 30), the medallist being usually present to receive it, but this the state of my father's health prevented. He wrote to Mr. Fox:—

"I was glad to see your hand-writing. The Copley, being open to all sciences and all the world, is reckoned a great honour; but excepting from several kind letters, such things make little difference to me. It shows, however, that Natural Selection is making some progress in this country, and that pleases me. The subject, however, is safe in foreign lands."

The presentation of the Copley Medal is of interest in connection with what has gone before, inasmuch as it led to Sir C. Lyell making, in his after-dinner speech, a "confession of faith as to the Origin." He wrote to my father (Life of Sir C. Lyell, vol. ii. p. 384), "I said I had been forced to give up my old faith without thoroughly seeing my way to a new one. But I think you would have been satisfied with the length I went."

Lyell's acceptance of Evolution was made public in the tenth edition of the Principles, published in 1867 and 1868. It was a sign of improvement, "a great triumph," as my father called it, that an evolutionary article by Wallace, dealing with Lyell's book, should have appeared in the Quarterly Review (April, 1869). Mr. Wallace wrote:—

"The history of science hardly presents so striking an instance of youthfulness of mind in advanced life as is shown by this abandonment of opinions so long held and so powerfully advocated; and if we bear in mind the extreme caution, combined with the ardent love of truth which characterise every work which our author has produced, we shall be convinced that so great a change was not decided on without long and anxious deliberation, and that the views now adopted must indeed be supported by arguments of overwhelming force. If for no other reason than that Sir Charles Lyell in his tenth edition has adopted it, the theory of Mr. Darwin deserves an attentive and respectful consideration from every earnest seeker after truth."

The incident of the Copley Medal is interesting as giving an index of the state of the scientific mind at the time.