Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR209.5.229 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | 'Philadelphia Academy Natural Sciences Proceedings' 16 June 1874 and 23 July 1875 |
| Description: | 'Philadelphia Academy Natural Sciences Proceedings' 16 June 1874 and 23 July 1875 |
| Document type: | Abstract |
| Cross reference: | [Marginalia vol.3] |