From Asa Gray   15 and 17 May 1865

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-4833.xml.

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

Please cite as “DCP-LETT-4833,” in Ɛpsilon: The Charles Darwin Collection accessed on 13 May 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-4833