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[The desire that his views might spread in France was always strong with my father, and he was therefore justly annoyed to find that in 1869 the Editor of the first French edition had brought out a third edition without consulting the author. He was accordingly glad to enter into an arrangement for a French translation of the fifth edition; this was undertaken by M. Reinwald, with whom he continued to have pleasant relations as the publisher of many of his books into French.

He wrote to Sir J.D. Hooker:--"I must enjoy myself and tell you about Mdlle. C. Royer, who translated the 'Origin' into French, and for whose second edition I took infinite trouble.

She has now just brought out a third edition without informing me, so that all the corrections, etc., in the fourth and fifth English editions are lost. Besides her enormously long preface to the first edition, she has added a second preface abusing me like a pick-pocket for Pangenesis, which of course has no relation to the 'Origin.' So I wrote to Paris; and Reinwald agrees to bring out at once a new translation from the fifth English edition, in competition with her third edition...This fact shows that "evolution of species" must at last be spreading in France."With reference to the spread of Evolution among the orthodox, the following letter is of some interest. In March he received, from the author, a copy of a lecture by Rev. T.R.R. Stebbing, given before the Torquay Natural History Society, February 1, 1869, bearing the title "Darwinism." My father wrote to Mr. Stebbing:]

Dear Sir, I am very much obliged to you for your kindness in sending me your spirited and interesting lecture; if a layman had delivered the same address, he would have done good service in spreading what, as I hope and believe, is to a large extent the truth; but a clergyman in delivering such an address does, as it appears to me, much more good by his power to shake ignorant prejudices, and by setting, if I may be permitted to say so, an admirable example of liberality.

With sincere respect, I beg leave to remain, Dear Sir, yours faithfully and obliged, CHARLES DARWIN.

[The references to the subject of expression in the following letter are explained by the fact that my father's original intention was to give his essay on this subject as a chapter in the 'Descent of Man,' which in its turn grew, as we have seen, out of a proposed chapter in 'Animals and Plants:']

CHARLES DARWIN TO F. MULLER.

Down, February 22 [1869?].

...Although you have aided me to so great an extent in many ways, I am going to beg for any information on two other subjects. I am preparing a discussion on "Sexual Selection," and I want much to know how low down in the animal scale sexual selection of a particular kind extends. Do you know of any lowly organised animals, in which the sexes are separated, and in which the male differs from the female in arms of offence, like the horns and tusks of male mammals, or in gaudy plumage and ornaments, as with birds and butterflies? I do not refer to secondary sexual characters, by which the male is able to discover the female, like the plumed antennae of moths, or by which the male is enabled to seize the female, like the curious pincers described by you in some of the lower Crustaceans. But what I want to know is, how low in the scale sexual differences occur which require some degree of self-consciousness in the males, as weapons by which they fight for the female, or ornaments which attract the opposite sex.

Any differences between males and females which follow different habits of life would have to be excluded. I think you will easily see what I wish to learn. A priori, it would never have been anticipated that insects would have been attracted by the beautiful colouring of the opposite sex, or by the sounds emitted by the various musical instruments of the male Orthoptera. I know no one so likely to answer this question as yourself, and should be grateful for any information, however small.

My second subject refers to expression of countenance, to which I have long attended, and on which I feel a keen interest; but to which, unfortunately, I did not attend when I had the opportunity of observing various races of man. It has occurred to me that you might, without much trouble, make a FEW observations for me, in the course of some months, on Negroes, or possibly on native South Americans, though I care most about Negroes;accordingly I enclose some questions as a guide, and if you could answer me even one or two I should feel truly obliged. I am thinking of writing a little essay on the Origin of Mankind, as I have been taunted with concealing my opinions, and I should do this immediately after the completion of my present book. In this case I should add a chapter on the cause or meaning of expression...

[The remaining letters of this year deal chiefly with the books, reviews, etc., which interested him.]

CHARLES DARWIN TO H. THIEL.

Down, February 25, 1869.

Dear Sir, On my return home after a short absence, I found your very courteous note, and the pamphlet ('Ueber einige Formen der Landwirthschaftlichen Genossenschaften.' by Dr. H. Thiel, then of the Agricultural Station at Poppelsdorf.), and I hasten to thank you for both, and for the very honourable mention which you make of my name. You will readily believe how much interested I am in observing that you apply to moral and social questions analogous views to those which I have used in regard to the modification of species. It did not occur to me formerly that my views could be extended to such widely different, and most important, subjects.

With much respect, I beg leave to remain, dear Sir, Yours faithfully and obliged, CHARLES DARWIN.

CHARLES DARWIN TO T.H. HUXLEY.

Down, March 19 [1869].

My dear Huxley, Thanks for your 'Address.' (In his 'Anniversary Address' to the Geological Society, 1869, Mr. Huxley criticised Sir William Thomson's paper ('Trans.