Letter 13507A Darwin, C. R. to Hoek, P. P. C. 23 Nov 1881 Summary Add + Thanks him for magnificent work on Pycnogonida [The zoology of the voyage of H. M. S. Challenger, vol. 3, part 10 (1881)]. + Is delighted that he is undertaking the Cirripedia [1883–4]. Transcription The full text of this letter is not yet available online. Footnotes Add
