Cancelled: text published with letter to H. C. Watson [17 July 1861] n.5 (Correspondence vol. 9: 207 (S 1616)).
Expresses his wish for a discussion of the geographic distribution of closely allied species. [See 3218.]
Please cite as
Darwin Correspondence Project, “Letter no. 3211A,” accessed on 25 July 2016, http://www.darwinproject.ac.uk/DCP-LETT-3211A