PRESSURE ON RESISTANCE OF METALS. 



643 



TABLE XXV. 



PuKSSrRE COKFH'ICIKNT OF SPECIFIC ReSI.ST.\N-CE CALrUL.VTKI) I!V 



Gruxeisen's formul.v. 



absence of measurements, as fitting well into the periodic table as 

 shown by Richards. ^^ Also the compressibility of cobalt has not been 

 measured; I have assumed a mean between iron and nickel. 



For comparison, the computed values of Beckman, reduced from 

 atmospheres to kilograms, are reproduced in Table XXV. It appears 

 that the revised values sometimes give better and sometimes poorer 



