| RefNo | LBO/4/23 |
| AltRefNo | LBO/4/42 |
| Level | File |
| Title | Copy extract from a letter by Francis Slusius, Leodii, to Henry Oldenburg |
| Date | 25 July 1670 |
| Description | Being an extract ' Containing some observations of his upon Dr Barrow's Praefectiones Geometricae .'
Includes a pen and ink geometric drawing in the margin on p 43 |
| Language | Latin |
| Extent | 5p |
| Format | Manuscript |
| AccessStatus | Open |
| RelatedMaterial | LBO/4/24; LBO/4/25; LBO/4/26; |