TY - JOUR T1 - On Periodical Laws in the Larger Magnetic Disturbances JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 143 SP - 165 EP - 177 PY - 1853/01/01/ UR - http://dx.doi.org/10.1098/rstl.1853.0006 M3 - doi:10.1098/rstl.1853.0006 AU - Younghusband, C. ER -