To David Thomas Ansted, assistant secretary, Geological Society of London   [c. January 1845]

Letter and/or further information available at https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-811.xml.

Also published in The Correspondence of Charles Darwin, vol. 3.

Please cite as “DCP-LETT-811,” in Ɛpsilon: The Charles Darwin Collection accessed on 26 April 2024, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-811