12 Mr. R. L. Wills on the Effects of Temperature 



Table I. 



Temperature 

 15° 0. 



Magnetic 



Permea- 



Force 



bility 



(H). 



(/*)• 



0-172 



461 



0344 



543 



0-43 



630 



0-69 



814 



1-075 



1299 



1-72 



3084 



1-935 



3245 



2-15 



3273 



2-58 



3231 



301 



3129 



4-30 



2606 



5-16 



2349 



6-45 



1969 



8-60 



1581 



12-90 



1124 



Temperature 



before experiment 



258° 0. 



Temperature 



after experiment 



261° 0. 



Magnetic 



Force 



(H). 



0-086 



0-172 



0-344 



0-43 



0-69 



1075 



1-29 



1-72 



1-935 



2-15 



2-58 



3-44 



4-30 



6-45 



8-60 



Permea- 

 bility 



488 



596 



814 



933 



1315 



2788 



3509 



3931 



3870 



3827 



3609 



3147 



2719 



1980 



1536 



Temperature 



before experiment 



366° C. 



Temperature 



after experiment 



368° 0. 



0^086 



653 



0172 



759 



0-344 



1004 



0-43 



1150 



0-69 



2228 



1075 



4320 



1-505 



5078 



1-935 



4588 



2-58 



3986 



3-44 



3304 



4-30 



2769 



5-805 



2182 



6-45 



1988 



8-60 



1561 



Temperature 



before experiment 



481° 0. 



Temperature 



after experiment 



483° C. 



0-0285 



0-086 



0172 



0-344 



0-43 



0-69 



1-075 



1-505 



1-935 



2-58 



3-44 



4-30 



5-805 



6-45 



491 

 922 

 1085 

 1628 

 1910 

 4208 

 5743 

 5467 

 4811 

 4070 

 3273 

 2744 

 2109 

 1930 



Temperature 



before experiment 



592° 0. 



Temperature 



after experiment 



592° C. 



0285 



819 



0086 



1356 



0172 



1790 



0344 



3580 



0-43 



6150 



0-69 



8204 



0-86 



7931 



1075 



7250 



1-29 



6504 



1505 



5898 



1-935 



4979 



2-58 



3944 



3-44 



3084 



4-30 



2593 



6-45 



1863 



Temperature 



before experiment 



735° C. 



Temperature 



after experiment 



735° C. 



0-0285 



0-0568 



0086 



0129 



0-172 



0-194 



0-215 



0-258 



0-344 



0-43 



0-69 



1-075 



2-58 



2620 



3782 



5101 



9241 



14852 



15660 



16000 



15710 



14442 



12989 



9315 



6300 



2735 



