| Reference number | PT/18/17/3 |
| Level | Item |
| Title | Plate, 'March 1825' by Henry Foster |
| Date | March 1825 |
| Description | Chart showing magnetic needle variation at Port Bowen in March 1825, with some annotations indicating time of day. A graphite annotation on verso of this plate erroneously reads 'Phil Trans. Plates 1836'.
Subject: Magnetism / Navigation
Published in Philosophical Transactions as 'Observations on the diurnal changes in the position of the horizontal needle, under a reduced directive power, at Port Bowen, 1825'.
Communicated 12 January 1826. |
| Extent | 2p |
| Format | Diagram |
| Physical description | Fold-out ink chart on paper |
| Access status | Open |
| Related material | DOI: 10.1098/rstl.1826.0044 |
| Related records in the catalogue | PT/18/17 |
Fellows associated with this archive
| Code | Name | Dates |
| NA7230 | Foster; Henry (1796 - 1831); navigator | 1796 - 1831 |