To Asa Gray   3 January 1877

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-10768.xml.

Also published in The Correspondence of Charles Darwin, vol. 25.

Please cite as “DCP-LETT-10768,” in Ɛpsilon: The Charles Darwin Collection accessed on 29 March 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-10768