. The Philosophical magazine; a journal of theoretical, experimental and applied physics. t \vi . 2 refers to a nickel wire of *(S niillini. diameter, whichVillari critical points quite as striking as those of iron,th this difference, that the critical value is greater the Critical Points of Nickel and Iron. 307 greater the load, and for a given load is much greater innickel than in iron. With iron wire the curves may, and do, sometimes cut theload line twice, so that for a given value of magnetizing forcethere may be tico loads which have no effect on the temporarymagnetization. In fig. 1 non
. The Philosophical magazine; a journal of theoretical, experimental and applied physics. t \vi . 2 refers to a nickel wire of *(S niillini. diameter, whichVillari critical points quite as striking as those of iron,th this difference, that the critical value is greater the Critical Points of Nickel and Iron. 307 greater the load, and for a given load is much greater innickel than in iron. With iron wire the curves may, and do, sometimes cut theload line twice, so that for a given value of magnetizing forcethere may be tico loads which have no effect on the temporarymagnetization. In fig. 1 none of the curves actxiaUy cut theload-line a second time, because the loading was not carriedquite far enough ; but with subsequent experiments madewith the same wire and with the same loads at a tem):)eraturoof 200° C. the two points of cutting w^ere easily obtained,within certain limits of magnetizing force, whilst the nextfigure shos\s that with greater loads the second point can bereached at the ordinary temperature of the room. Fitr. 3.—Iron*. + 4( MnMiaanmMiaii mssssmmmama^stm.
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