210 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



mate linear interpolation which he has employed is not as accurate as 

 his experimental data demand. 



The logarithmic equation applied to the Cu-Hg couple as typical of 

 the Noll data yields 



2^6 = 2.57 434^12250. 

 or log 2j,e = 1.2250 log t + 0.41 066 5. 



The residuals to this expression are given in Table IX. 



TABLE IX. 

 AvENARius Equation. — Data minds Equation in Per Cent. 



