Diagram, experimental equipment by Thomas Andrews A diagram, labelled figure 1, illustrating a stage of Andrews' experiment into the electro-chemical effects on magnetising iron: 'For every set of experiments one of the steel bars was magnetised, the other being retained in its un­magnetised state. The bars were each weighed on the balance, and afterwards each bar was immersed, in an equal quantity of cupric chloride solution, in separate beakers, a considerable distance apart (see fig. 1); the two beakers were of the same diameter and fluid capacity; the bars were placed in the beakers'. Includes notes to the engraver. Subject: Metallurgy / Magnetism A print of this diagram was published in volume 52 of the Proceedings of the Royal Society alongside the paper 'Electro-chemical effects on magnetising iron. Part IV'. 1892