TABLE 3O2. 



DISSIPATION OF ENERGY DUE TO MAGNETIC HYSTERESIS IN IRON.* 



The first column gives the maximum magnetic induction B per square centimetre in c. g. s. units. The other col- 

 umns give the dissipation of energy in ergs per cycle per cubic centimetre for the iron specified in the foot-note 



* Ewing and Klassen, " Phil. Trans. Roy. Soc." vol. clxxxiv. A, p. 1015. 



283 



