To J. S. Bowerbank   19 January [1850]

My dear Sir

In accordance with your permission, I have cleared one of the large valves, which can be now drawn. The four little embedded pieces, now cleared & separated, consist of (1) a fragment of a scutum, (2) a perfect upper latus (3^d) a perfect lower latus 4^th. a broken do.—¹

Your specimen is certainly now a hundred–fold more instructive; & the 3 valves which were in their nearly proper position have not been in the least displaced.

Many thanks for offer of sessile cirripedes, but I am not nearly ready for them yet.—²

Forbes³ wrote to me that he understood that you had some valves from the Gault of Pollicipes besides those sent to me; if you have & w^d entrust them to me, I sh^d be particularly thankful, as I want to see as many as possible.— M^r Fitch has sent me some beautiful specimens for description.—

I fully thought I had asked you in my former note, & if I did not it was an accidental omission which I am very sorry to say will entail another note on you.— It is to ask whether you will permit me to have some of your specimens drawn by M^r J. Sowerby: I intend to have all the fossils (if I get permission), which have any good characters, drawn.—

With respect to publication of the fossils, I have not yet thought: your mentioning the Palæont. Soc. makes me think whether my work w^d suit them.⁴ I hope immediately to receive a lot of fossils from Copenhagen-chalk, named by Beck⁵ & Steenstrup; which will be very valuable for comparison with the British specimens.— Will you give me your idea about Palæont. Soc.— I suppose, even if you thought it would suit, I had better wait till I have done the Sessile cirripedes, as the whole will of course be only a small Part.—

Pray forgive this trouble. & believe me. Yours very faithfully | C. Darwin