RefNo | AP/28/8/1 |
Level | Item |
Title | Unpublished manuscript, 'On magnetic variation' by John George Hartley |
Creator | Hartley; John George (fl 1846) |
Date | August 1845 |
Description | Hartley attempts to produce an estimation of the precise value of the equinoctial or astronomical year.
Followed by a covering letter addressed to P M [Peter Mark] Roget.
Subject: Magnetism
Received 16 October 1846. |
Extent | 8p |
Format | Manuscript |
PhysicalDescription | Ink on paper |
AccessStatus | Open |