| Reference number | MM/4/84 |
| Level | Item |
| Title | Letter from Henry Cavendish, William Watson, Benjamin Franklin and J Robertson, to the Royal Society |
| Date | 18 November 1773 |
| Description | On having viewed the lightning conductors fixed on the wall of the Powder Magazines at Purfleet, and judging them to be agreeably constructed |
| Extent | 1 side |
| Format | Manuscript |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA7974 | Franklin; Benjamin (1706 - 1790) | 1706 - 1790 |
| NA7588 | Watson; Sir; William (1715 - 1787) | 1715 - 1787 |
| NA8163 | Cavendish; Henry (1731 - 1810); natural philosopher | 1731 - 1810 |