296 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



Conductivity, k, of Open-Hearth Steel in C. G. S. Units. 



)>0.1347 



^0.1316 



Mean, 59°.2 0.1280 0.1320 



0.1300 



Discussion and CRiTicis.^r. 



Taking 0.1325 * as the value of k at 27°.2, and 0.1300 as the value 

 at 59°. 2, we get as the coefficient of change with rise of temperature 



It is probable that open-hearth steel resembles the iron of this table more 

 nearly than it does the steel. 



