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From Benjamin Dann Walsh 1 March 1865
Summary
Sends his paper on "Willow-galls" [Proc. Entomol. Soc. Philadelphia 3 (1864): 543–644].
Lengthy criticism of Agassiz’s views on species as stated in his Essay on classification [1857].
Interested by CD’s trimorphism in Lythrum. Thinks some great mystery may lie in the fact that in some genera, some species are tri-, some di-, and some monomorphic, and in other genera, Apis, Vespa, Bombus, all the known species are dimorphic.
| Author: | Benjamin Dann Walsh |
| Addressee: | Charles Robert Darwin |
| Date: | 1 Mar 1865 |
| Classmark: | Field Museum of Natural History, Chicago |
| Letter no: | DCP-LETT-4778 |
Matches: 1 hit
- … 1857–62 ); there is an annotated copy in the Darwin Library–CUL (see Marginalia 1: 9–11). The essay was reprinted as a separate book in 1858 and 1859, before the appearance of Origin , and responded to debates generated by Baden Powell’s Essays on the spirit of the inductive philosophy ( Powell 1855 ). See Winsor 1991 , pp. 6–9, 23–7. For CD’s assessment of Agassiz’s ‘Essay on classification’, see Correspondence vol. 7, letter to Asa Gray, …
