Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR40.39 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | De la Beche `Theoretical Researches': 193 |
| Description: | "Insist upon thickness of metamorphic action" |
| Document type: | Abstract |
| Cross reference: | [Marginalia vol.3] |