TY - JOUR T1 - On the Lunar Diurnal Variation of Magnetic Declination at the Magnetic Equator JF - Proceedings of the Royal Society of London (1854-1905) VL - 10 SP - 475 EP - 484 PY - 1859/01/01/ UR - http://dx.doi.org/10.1098/rspl.1859.0090 M3 - doi:10.1098/rspl.1859.0090 AU - Broun, J. ER -