To Henry Johnson 2 May [1872]
Summary
Thanks for notes on worm-castings. Amount of ammonia surprises CD. David Forbes asserts that published analysis of carbon in vegetable matter valueless. Suspects that worms search for food and do not blindly swallow earth.
| Author: | Charles Robert Darwin |
| Addressee: | Henry Johnson |
| Date: | 2 May [1872] |
| Classmark: | Torquay Museum Society (AR470) |
| Letter no: | DCP-LETT-8306 |
Document type
| letter | (1) |
Author
| Darwin, C. R. | (1) |
Addressee
Correspondent
| Darwin, C. R. | |
| Johnson, Henry (a) | (1) |
