TY - JOUR T1 - Results of a Comparison of Certain Traces Produced Simultaneously by the Self-Recording Magnetographs at Kew and at Lisbon; Especially of Those Which Record the Magnetic Disturbance of July 15, 1863 JF - Proceedings of the Royal Society of London (1854-1905) VL - 13 SP - 111 EP - 120 PY - 1863/01/01/ UR - http://dx.doi.org/10.1098/rspl.1863.0027 M3 - doi:10.1098/rspl.1863.0027 AU - Capello, S. ER -