Diagrams, experimental equipment and results by Joseph Wilson Swan and J Rhodin Two graphs of results, labelled graphic tables 1-2, and two pages of small diagrams, labelled diagram 1 and figures 2-3, showing equipment used by Swan and Rhodin in their investigations into the absolute specific resistance of pure electrolytic copper. Subject: Electricity Prints of these diagrams were published in volume 56 of the Proceedings of the Royal Society alongside the paper 'Measurements of the absolute specific resistance of pure electrolytic copper'. 1894