My dear Sir

I have been very relax in not having written to you oftener, telling you as often as I sent off clean sheets; but in fact I have been worked half-to death.²

You will have now received the whole. To day I sent off a corrected sheet in Vol. I & some corrections for Vol. II; so that the Postscript need not be printed.³

Perhaps I may send a few more corrections in clean sheet reprinted, for the whole edition of 2500 copies have been sold before a copy has gone into the book-sellers shops.—⁴

I heartily wish you well through your laborious undertaking & remain | My dear Sir | Yours very sincerely | Ch. Darwin