On the Magnetic Character of the Armour-Plated Ships of the Royal Navy, and on the Effect on the Compass of Particular Arrangements of Iron in a Ship
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 th