Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR42.192 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | N.B In very still river running at one mile hour how far back is stream |
| Description: | Glen Roy |
| Document type: | Note |
| Cross reference: | [Marginalia vol.3] |