| RefNo | RBO/7/33 |
| AltRefNo | RBO.7.47 |
| Level | Item |
| Title | Copy of a letter from John Wallis to Edmond Halley dated 17 January 1687 at Oxford |
| Date | 26 January 1687 |
| Description | Concerning the resistance of medium to bodies projected through it, and to the fall of bodies |
| Language | English |
| Extent | 7 sides |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | JBO/8/124 |