To James Dwight Dana 15 June [1851]
Summary
Thanks for note of 13 May and tracings of the "curious Bopyrid".
Is astonished at amount of work JDD does and frightened it will cause ill-health, such as CD has experienced.
| Author: | Charles Robert Darwin |
| Addressee: | James Dwight Dana |
| Date: | 15 June [1851] |
| Classmark: | Gilman 1899, p. 310 |
| Letter no: | DCP-LETT-2107 |
