To John Allen   25 May 1847

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-1090F.xml.

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

Please cite as “DCP-LETT-1090F,” in Ɛpsilon: The Charles Darwin Collection accessed on 28 April 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-1090F