TY  - JOUR
T1  - On the Amount and Changes of the Polar Magnetism at Certain Positions in Her Majesty's Iron-Built and Armour-Plated Ship 'Northumberland.' 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 16
SP  - 311
EP  - 312
PY  - 1867/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1867.0061
M3  - doi:10.1098/rspl.1867.0061
AU  - Evans, F.
ER  -