| RefNo | DM/3/137 |
| Level | Item |
| Title | Bill and Receipt, Royal Society and Portin |
| Date | 1818 |
| Description | Payment to Portin of £222.9, for work relating to experiments on the pendulum. |
| Extent | 3 sides |
| Format | Manuscript |
| AccessStatus | Open |
| AccessConditions | OPEN - but photocopying forbidden. |