Annealing on the Magnetic Moments of Steel Magnets. 427 



Table VI. 

 (Annealed for half an hour at 236° C.) 



Specimen I. 



Number of 

 magnet. 



Magnetic 

 moment, 

 per gram. 



Percentage loss due to 

 falling 



Total loss. 



one time. 



three times. 



1 



2 



3 



4 



5 



63-48 

 61-90 

 61-60 

 62-90 

 61-66 



5-14 

 5-27 

 7-45 

 6-73 

 5-49 



3-21 

 3-08 

 2-96 

 2-94 

 4-56 



8-19 



8-20 



10-20 



8-84 

 9-80 



Mean 



62-32 



6-01 



3-35 



9-04 



Specimen II. 



1 



2 



3 



4 



5 



69-13 . 



69-13 



68-05 



69-60 



68-36 



6-71 



7-80 



6-36 



13-77 



12-88 



4-07 

 7-28 

 7-76 

 2-83 

 4-93 



10-51 

 14-54 

 1363 

 16-22 

 17-20 



Mean 



68-85 



9-50 



5-37 



14-42 



Specimen III. 



1 



2 



3 



4 



5 



65-8 

 67-9 

 64-7 

 65-0 

 640 



17-97 

 10-43 

 17-80 

 13-63 

 13-85 



4-11 

 5-34 

 5-55 

 421 

 617 



21-34 

 15-22 

 20-10 

 1727 

 1916 



Mean 



65-5 



14-73 



5-07 



18-61 



Here we get a very interesting result : we find that, by 

 annealing for half an hour at approximately three times the 

 temperature, we get three times more percentage loss. It is 

 also interesting to note that in every case the total percentage 

 loss is almost exactly tripled ; but the three specimens still 

 preserve the same relative behaviour throughout. 



The same magnets were again immersed for half an hour in 



