TY  - JOUR
T1  - Contributions to Terrestrial Magnetism.--No.X. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 15
SP  - 209
EP  - 209
PY  - 1866/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1866.0046
M3  - doi:10.1098/rspl.1866.0046
AU  - Sabine, E.
ER  -