426 Mr. F. H. Pitcher on Effects of Temperature and 



practically unaffected by magnetization, and that the reduc- 

 tion of the hysteresis loss to one-third of its original value 

 was unaccompanied by any measurable change of conductivity. 

 Specimen tables of the reduced observations in vacuum and 

 in air are here exhibited. 



Table I. — Longitudinal Fields 1-30. 



In Vacuum. 



In Air. 



Current in Wire 12-45 amp. 

 Eesistance of Wire 0-08324 w. 

 Temperature of Wire 552° 0. 



Current in Wire 12*60 amp. 

 Eesistance of Wire 003447 w. 

 Temperature of Wire 224° C. 



I. 



H. 



I. 



H. 



43-4 

 673 



86-1 

 108-4 

 135-0 

 173-5 

 286-1 

 437-6 

 963-0 



0-99 

 1-45 

 1-78 

 2-24 

 2-75 

 3-60 

 6-27 

 10-10 

 3030 



20-8 



42-7 



58-8 



82-0 



1080 



1470 



2690 



432-5 



10030 



0-99 

 1-45 

 175 

 2-23 

 2-75 

 3-59 

 6-27 

 1008 

 30-25 



Table II.— Longitudinal Fields 50-290. 



In Vacuum. 



In Air. 



Current in Wire 12 amp. 

 Eesistance of Wire 007312 w. 

 Temperature of Wire 496° C. 



Current in Wire 1T60 amp. 

 Eesistance of Wire 03035 w. 

 Temperature of Wire 187° C. 



I. 



H. 



I. 



H. 



1235 

 1359 

 1397 

 1437 



51-2 



93-9 



167-9 



290-4 



1254 

 1410 



1528 

 1633 



51-2 



93-9 



1670 



290-3 



