My dear Sir

It will give me much pleasure to send you a copy of my book, and I have directed M^r. Murray to send you one; but there may be a little delay, as I heard this morning that every copy was sold; but the type is yet up and more copies will be printed off directly.— I fear my methods will not be applicable to embryos.¹

I enclose copies of the articles to which, I suppose, you refer, and which I discovered after a long search.— As I have no other copy I should be obliged if you would return them. I never wrote in the Zoologist, so I suppose something was copied out of Nature.²

Your book has not yet arrived, but probably will to-morrow, as they are often delayed a day or two by our Post.³ I am very much obliged to you for your kindness in having sent it to me.

My dear Sir | Yours sincerely | Ch. Darwin