To ?   2 May [1869 or later]

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-13866A.xml.

Also published in The Correspondence of Charles Darwin, vol. 30-Supplement.

Please cite as “DCP-LETT-13866A,” in Ɛpsilon: The Charles Darwin Collection accessed on 28 March 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-13866A