| RefNo | MA/251/5 |
| Previous numbers | MA.251 |
| Level | Item |
| Title | Observations on the effects of temperature on magnets used at the Madras Magnetic Observatory, India, by Samuel Owen Owen Ludlow |
| Creator | Ludlow; Samuel Owen Edgar (d.1888); British army officer in India |
| Date | 17 August 1842 |
| Description | Experiments 'made ot ascertain the effect of temperature on Magnet no.16, (the Magnet now used in the Horizontal Force Instrument), Madras 4th May 1842'.
Signed [p.3]: 'S.O.E. Ludlow Supt. Madras 17th August 1842'. |
| Extent | 4p. [p.4 blank] |
| Format | Manuscript |
| PhysicalDescription | Ink on paper. |
| AccessStatus | Open |