To Robert Fitch 5 May 
Down Farnborough Kent
My dear Sir
I write to acknowledge the safe receipt of your two specimens & to thank you for your constant & kind regard to my pursuits.— The valves are new to your collection; but they are unfortunately valves on which specific names cannot possibly be founded.—
Yours sincerely | C. Darwin
Thanks him for additional fossil cirripede specimens.
Please cite as
Darwin Correspondence Project, “Letter no. 1325,” accessed on 24 July 2016, http://www.darwinproject.ac.uk/DCP-LETT-1325