Diagrams, experimental equipment and results by J A [James Alfred] Ewing and William Low Four diagrams, labelled figures 1-4, showing a plan view and elevation of a 'test-piece' of wrought iron used in Ewing and Low's investigations into the magnetisation of iron in strong field and two graphs of experimental results on Lowmoor and cast iron. Includes notes to the engraver. Subject: Physics / Magnetism Prints of these diagrams were published in volume 42 of the Proceedings of the Royal Society alongside the paper 'On the magnetisation of iron in strong fields'. 1887