TY  - JOUR
T1  - Collimator Magnets and the Determination of the Earth's Horizontal Magnetic Force
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 65
SP  - 375
EP  - 413
PY  - 1899/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1899.0051
M3  - doi:10.1098/rspl.1899.0051
AU  - Chree, C.
ER  -