Darwin, C. R. to Forchhammer, J. G.
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Thanks JGF for geological information.
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Steenstrup's cirripede specimens have been of great use and interest. CD has now described 33 fossil pedunculated cirripedes.
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Transcription
Down Farnborough Kent
May 20
My dear Forchhammer
I ought to have written sooner to have thanked you very sincerely for your letter of
the 27
Prof. Steenstrup's specimen which I owe first to your kindness have been of
great use & interest to me: I have now described 33 fossil
Pedunculated Cirripides, & they are in M
With my very sincere thanks | Believe me | Yours very truly | Charles Darwin
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- f1 1328.f1
The letter has not been found. The geological information may have been in answer to letter to J. J. S. Steenstrup, 3 April [1850], asking about the relationship of the chalk formations of Scania, Faxoe, and Westphalia. In Fossil Cirripedia (1851): 7, CD cited Forchhammer and Steenstrup as his authorities for considering them equivalent formations, more recent than the common Upper or White Chalk and equivalent to the formation of Maastricht.