332 



TABLE 384. 

 MAGNETIC SUSCEPTIBILITY. 



If 31 is the intensity of magnetization produced in a substance by a field strength 



then the 



magnetic susceptibility H = 31 /$ This is generally referred to the unit mass; italicized figures 

 refer to the unit volume. The susceptibility depends greatly upon the purity of the substance, es- 

 pecially its freedom from iron. The mass susceptibility of a solution containing p per cent by weight 

 of a water-free substance is, if H is the susceptibility of water, (p/ioo) H + (i p/ioo) H . 



Valuss are mostly means taken of values given in Landolt-Bornstein's Physikalisch-chemische Tabellen. See espe- 

 cially Honda, Annalen der Physik (4), 32, 1910. 



SMITHSONIAN TABLES. 



