To Friedrich Hildebrand   28 July [1875]

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-10098F.xml.

Also published in The Correspondence of Charles Darwin, vol. 23.

Please cite as “DCP-LETT-10098F,” in Ɛpsilon: The Charles Darwin Collection accessed on 27 April 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-10098F