| Reference number | RBO/7/75 |
| Alternative reference number | RBO.7.187 |
| Level | Item |
| Title | Letter from William Derham to Hans Sloane 'about a contrivance to measure the height of the Mercury in the Barometer by a Circle on one of the weather Plates' |
| Date | 1698 |
| Description | Letter dated 3 January 1698
Also gives explanations for a diary of weather observations for 1697 which was sent |
| Language | English |
| Extent | 4 sides |
| Format | Manuscript |
| Access status | Open |
| Related records in the catalogue | EL/D1/47 |
Fellows associated with this archive
| Code | Name | Dates |
| NA6239 | Derham; William (1657 - 1735); naturalist | 1657 - 1735 |
| NA8406 | Sloane; Sir; Hans (1660 - 1753); physician and collector | 1660 - 1753 |