TY - JOUR T1 - A Comparison of the Changes of Magnetic Intensity Throughout the Day in the Dipping and Horizontal Needles, at Treurenburgh Bay in Spitsbergen JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 118 SP - 303 EP - 311 PY - 1828/01/01/ UR - http://dx.doi.org/10.1098/rstl.1828.0016 M3 - doi:10.1098/rstl.1828.0016 AU - Foster, H. ER -