| RefNo | AP/16/25/1 |
| Level | Item |
| Title | Unpublished letter, regarding the north magnetic pole from John Macdonald to Davies Gilbert |
| Date | 19 January 1831 |
| Description | Macdonald shares a copy of a letter to James R Graham Bart with Gilbert. In the copy, Macdonald stresses to Bart the importance of research into the depth of the north magnetic pole.
Subject: Magnetism / Trigonometry
Written by Macdonald at Summerlands, Exeter [England]. |
| Extent | 10p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA3036 | Macdonald; John (1759 - 1831) | 1759 - 1831 |
| NA8707 | Gilbert; Davies (1767-1839) | 1767-1839 |