Diagrams, experimental equipment by Thomas Andrews Two diagrams showing the equipment used by Andrews in his investigations into electro-chemical effects on magnetising iron. The diagrams show tubes connected to a galvanometer. Subject: Chemistry / Magnetism / Metallurgy Prints of these diagrams were published in volume 46 of the Proceedings of the Royal Society alongside the paper 'Electro-chemical effects on magnetising iron. Part III'. 1889