| Reference number | MS/257/1/245 |
| Alternative reference number | Sa.245 |
| Previous numbers | ES1/39/245 |
| Level | Item |
| Title | Letter from John Allan Broun, Makerstoun, Kelso to Edward Sabine |
| Date | 11 November 1847 |
| Description | Broun expresses difficulty in understanding a table from the St Helena observations regarding the horizontal force magnet and the temperature and describes his attempt to determine the true quantity from the corrected and uncorrected scale means and temperature coefficient. Informs Sabine they have not received a copy of the Greenwich magnetic observations from 1844. Broun sent a note to the Literary Gazette regarding the largest disturbance at Makerstoun on 24th October. Suggests using a small deflector for the bifilar when the scale goes out of the field. |
| Extent | 4p |
| Format | Manuscript |
| Physical description | Ink on paper |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA3813 | Broun; John Allan (1817 - 1879) | 1817 - 1879 |
| NA8279 | Sabine; Sir; Edward (1788 - 1883) | 1788 - 1883 |