I. Experimental researches in magnetism

The paper describes in detail experiments of which preliminary notices have already been published in the “ Proceedings of the Royal Society,” vol. 34, p. 39, and in the “ Philosophical Magazine,” November, 1883. The experiments relate to— (1.) The magnetic susceptibility of iron and steel, the form of the magnetisation curve, and the changes of magnetism caused by cyclic changes of magnetising force.