Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR205.7.268 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | H. Spencer Principle of Biology 1867. Vol. 2. no 16 & 17 p 437. on Trees not fruiting at first, bears on Hybridism. |
| Document type: | Abstract |
| Cross reference: | [Marginalia vol.3] |