288 TABLES 298-300. MAGNETIC PROPERTIES OF IRON. 



TABLE 298. Magnetic Properties of Iron and Steel. 



E. Gumlich, Zs. fur Electrochemie, 15, p. 599; 1909. 

 Brackets indicate annealing at 800 C in vacuum. Parentheses indicate hardening by quenching from cherry-red. 



TABLE 299. Cast Iron in Intense Fields. 



B. O. Peirce, Proc. Am. Acad. 44, 1909. 

 TABLE 300. Corrections for Ring Specimens. 



hysteresis is less than it would be for a uniform distribution. This ratio is also given 

 for the case of constant permeability, the values being applicable for magnetizations in the neigh- 

 borhood of the maximum permeability. For higher magnetizations the flux density is more uni. 

 form, for lower it is less, and the correction greater. 



SMITHSONIAN TABLES. 



