From A. R. Wallace   2 October 1865

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-4906.xml.

Also published in The Correspondence of Charles Darwin, vol. 13.

Please cite as “DCP-LETT-4906,” in Ɛpsilon: The Charles Darwin Collection accessed on 19 April 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-4906