From W. E. Darwin   22 March [1864]

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-4434.xml.

Also published in The Correspondence of Charles Darwin, vol. 12.

Please cite as “DCP-LETT-4434,” in Ɛpsilon: The Charles Darwin Collection accessed on 12 May 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-4434