246 Dr. D. K. Morris on the Magnetic Properties 



TABLE XII. 



Iron Specimen B. 



Electrical Resistance at Different Temperatures. 



(a) After annealing at 840°. (Curve 18, I.) 

 [Critical Temp. = 782°.] 



Temp. 



°C. 



Sp. Resist. 

 in C.G.S. 



Units. 



Temp. 



°C. 



Sp. "Resist. 



in C.G.S. 

 Units. 



Temp. 



Sp. Resist. 



in C.G.S. 



Units. 



826 



800 



786-5 



772 



764 



751 



739-5 



714-5 



108300 



105100 



103000 



100000 



J 8600 



96200 



94200 



89300 



679 



649 



605-5 



555 



561 



517 



466-5 



413-5 



83750 

 78900 

 71950 

 64400 

 65400 

 59250 

 52700 

 45900 



358-5 

 314-5 

 252-5 

 190-5 

 128-5 

 101 



52 



18 



39800 

 34920 

 28660 

 23280 

 18440 

 16410 

 13210 

 11110 



(b) After annealing at 1150°. (Curve 18, ii.) 

 [Critical Temp. = 778°.] 



Temp. 



°C. 



Sp. Resist. 





Sp. Resist. 





Sp. Resist. 



iu C.G.S. 



Temp. 

 °C. 



in C.G.S. 



Temp. 



°C. 



030-5 



in C.G.S. 



Units. 



Units. 



Units. 



1150 



120600? 



o 



871 



113400 



76400 



1142 



12 1CX)0? 



858 



112500 



637 



77400 



1115-5 



120850 



844 



111400 



594 



70850 



1095-5 



120600 



824-5 



109600 



553-5- 



64850 



10715 



120350 



813-5 



11)84111) 



554 



64900 



1058-5 



120050 



792-5 



105600 



503-5 



57850 



1036 



119650 



787 



104600 



454 5 



51770 



1014-5 



119100 



781 



103400 



406 



45720 



989-5 



118550 



770 



100900 



386 



43400 



983 



118350 



765 5 



100000 



861 



40580 



9775 



118200 



764-5 



99850 



295-5 



34020 



972 



118100 



745-5 



96150 



252-5 



29080 



946-5 



117200 



744 



95650 



196-5 



24020 



9265 



116600 



725-5 



92050 



140-5 



19410 • 



916-5 



116200 



697 5 



87200 



84 



15390 



891-5 



114900 



658, 



80850 



18 ' 



11140 



