TY - JOUR T1 - On the Simultaneity of Magnetic Variations at Different Places on Occasions of Magnetic Disturbance, and on the Relation between Magnetic and Earth Current Phenomena JF - Proceedings of the Royal Society of London (1854-1905) VL - 52 SP - 191 EP - 212 PY - 1892/01/01/ UR - http://dx.doi.org/10.1098/rspl.1892.0068 M3 - doi:10.1098/rspl.1892.0068 AU - Ellis, W. ER -