6i8 



Albert P. Mathews 



d required by the formula: d = Sd c , with Young's value 

 of d c , is 0.8736. 



The formula appears then to be correct. 



By substituting in (6) the value of TV* /3 found by combining 

 (n) A and (14) there is obtained 



(27) a = M((S 2 S + 2)/(S 2))R(T C T) '/aT/A/ (^ d v ). 



Table 6 contains the results of calculating "a" by this 

 formula. 



6 "a" BY FORMULA (27) IN DYNES FOR A GRAM 



Oxygen 

 Isopentane Pentane (Mathias and Onnes) 



