TY - JOUR T1 - Reduction and Discussion of the Deviations of the Compass Observed on Board of All the Iron-Built Ships, and a Selection of the Wood-Built Steam-Ships in Her Majesty's Navy, and the Iron Steam-Ship 'Great Eastern'; Being a Report to the Hydrographer of the Admiralty JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 150 SP - 337 EP - 378 PY - 1860/01/01/ UR - http://dx.doi.org/10.1098/rstl.1860.0021 M3 - doi:10.1098/rstl.1860.0021 AU - Evans, F. ER -