1893.] 



Magnetic Viscosity. 



367 



Table I. — Hard Steel-wire Ring. 





B. 



H. 



Points marked x 



Points marked • 





obtained by 



obtained by 





method shown 



method shown 





in fig. 1. 



in fig. 2. 



+ 44*12 



16,295 



16,436 



34 -77 



15,830 

 + 14,407 



15,650 



25*44 



14,290 



19-32 





, 9,539 



16 1 





+ 1,704 



14-2 



- 4*045 



- 4,130 



7-73 



12,690 



12,820 









14,280 



- 7 73 



14*870 

 15,270 



14,990 



14-2 



15,380 



16-1 





15,460 



19*32 





15,630 

 15,860 



25 -44 



15*733 



34 -77 



16,033 



16,150 



44-12 



16,295 



16,436 



Table II. — Frequency 5 per second. 



B. 



15,660 

 15,200 

 13,010 

 10,190 

 + 3,970 

 - 1,230 

 5,340 

 9,176 

 12,007 

 13,377 

 14,382 

 14,747 

 15,203 

 15,295 

 15,477 

 15,523 

 15,660 



H. 



41-7 

 34-4 

 251 

 19-95 

 17-1 

 15-3 

 14-1 

 12-3 

 9-4 

 + 3-4 

 - 5-6 

 14-4 

 22-0 

 26-85 

 30-86 

 35 -75 

 41-7 



