Thermodynamics to Discharge of Electricity by Hot Bodies. 197 

 Richardson finds (page 603) 



in which I have corrected obvious misprints, and (page 605) 



1 f R dw ) /ox 



a =-eiy^i-de\ (i) 



If w = w -t-a6 equation (3) gives 



and with this (2) becomes 



«'o(~-^)+RlogJ-R(l+f i ) log^O. . (4) 



This is the same thing as (1), the result which I obtained. 



C e tr . 

 Prof. Richardson neglects the term e I ^-d$ in (2), which 



of course is only permissible when a is very small, so that 

 from (3) 



dw R 





dd 7-1 



Unless this particular value of a is used we do not obtain 



y 



which is the equation from which Richardson draws the con- 

 clusion that the form of the function is independent of the 

 value of a. 



It appears therefore that the expression I obtained is in 

 reality confirmed by Richardson's method of calculation when 

 the integral term is not omitted. 



