JOURNAL OF THE COLLEaE OF SCIENCE, IMPERIAL UNIVERSITY, 

 TOKYO, JAPAN. 



VOL. XX., ARTICLE 6. 



On the Magnetization and the Magnetic Change 



of Length in Ferromagnetic Metals and 



Alloys at Temperatures ranging 



from -186°C to +1200°C. 



By 



K. Honda, Rigakuhakushi. 



and 



S. Shimizu, RigakusM. 



With 4 plates. 



In this journal Vol. XIX., Art. 11, 1903, Professor H. 

 Nagaoka and one of us published the result of experiments on 

 the magnetization and magnetostriction of nickel steels containing 

 different percentages of nickel. The present experiment was un- 

 dertaken, on the one hand, to extend the above investigation to 

 different temperatures, and on the other hand, to form a con- 

 tinuation of our former experiment.* 



The experiment was made in three separate stages. In the 

 first experiment, which extended from February 21 to July 2, 

 1903, the magnetization and the magnetic change of length at 

 ordinary and liquid air temperatures were measured ; in the 

 second experiment extending from January 17 to February 2, 



*) K. Honda and S. Shimizu, this Jour. Vol. XIX, Art. 10, 1903. 



