PMl, Mag. Ser, C, Tol, C, PI. XXVII. 



-Change of Resistance of Nickel wire under various Loads. 

 Load giveu iu lulos per sq. mm. 



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Fig. 2.— After-efieet of Stress on Change of Eesi.^lance in Nickel. 















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Fig. 3.— Magnetic Change of Resistance of various specimena of 

 Nickel wire. 



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Fig. 4. — Magnetic Change of Eesistance in Iron at various Loads. 

 Load given in kilos per sq. mm. Dotted curve shows after- 

 efiect of Load 24-5. 



Fia. 5.— Magnetic Change of Eesistance in Platinite. 

 Load given in kilos per sq. mm. 



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Fib. 6.— Magnetic Change of Eesistance in Nickel af 15° C. and at 100° C. 

 Full curves refer to wire '35 mm. diameter, dotted curves to wire 

 •14 mm. diameter. 



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Fig. 7.— Magnetic Ol.ange of Eesistance in Iron at 15° C. and at 100° 

 Full curves refer to soft mre, dotted curves to wire hardened hv 

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