TY - JOUR T1 - Concerning the Differences in the Magnetic Needle, on Board the Investigator, Arising from an Alteration in the Direction of the Ship's Head JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 95 SP - 186 EP - 197 PY - 1805/01/01/ UR - http://dx.doi.org/10.1098/rstl.1805.0012 M3 - doi:10.1098/rstl.1805.0012 AU - Flinders, M. ER -