To ? 28 April [1863?]1
[Down] [referring to an exchange of photographs with Professor Edouard Claparède, the Swiss naturalist, ‘for whom I feel the highest respect’.]
Discusses exchange of photographs with Édouard Claparède, "for whom I feel the highest respect".
Please cite as
Darwin Correspondence Project, “Letter no. 13866,” accessed on 27 February 2017, http://www.darwinproject.ac.uk/DCP-LETT-13866