Dear Sir

You will, perhaps, be surprised at not having before heard from me.— I have now finished with your truly valuable collection of fossil Cirripedia.¹ My small monograph is printed off, & completed, but owing to the regulations of the Palæontological Society, the copies will not be distributed, till, I believe, the end of this month.² The specimens are all ready to be packed up, & I delay returning them only that I may include copies of my monograph³ for yourself, Prof. Forchhammer⁴ & a third copy either (as you may think best) for the University or M. Angelin.—⁵ The foreign species, by the Rules of the Pal. Soc., are described in notes.⁶ I am not well satisfied with my monograph but I have done the work as well as I could: I suspect there is very little information added to your excellent memoir.—⁷ I shall soon publish a monograph on the recent Pedunculata, which, of course, I will send you.—

I have had occasion to remove several specimens, especially of the second lot, from the cards, & in refixing them, I have changed the positions of several so as to class them better, but I have always marked the localities, when the change affected this point. Owing to the fresh distribution of some of the specimens, some of the cards are returned blank, but all the specimens themselves are returned.— If you can spare a few specimens to deposit in the British Museum, I sh^d. be very glad.—

You were so good formerly as to offer to send me some recent specimens, but I am so immediately going to press, that I will not now trouble you to send them.—⁸ Allow me most sincerely to thank you & Prof. Forchhammer for having so long entrusted to me your most interesting specimens, which shall be returned (carriage Paid) by the first Packet, after I have got my copies of my Memoir to enclose.—

Believe me, with the truest respect Your’s gratefully | C. Darwin