834 



We shall first fry to reduce the two scales to each other by 

 means of Nernst's linear formula. For this purpose we can utilize 

 the fact, that on both thermometers the boiling point of oxygen 



W 



was measured ; at tliis |ioint Pt\ gave 

 W 



W 



= 0.25176, and P, 



W. 



= 0.24(i31 '), so that in the formula 



i( = 0.007284. 



If we do not want to go beyond an accuracy of yq of '^ degree, 

 we may use this linear relation'). 4 much closer correspondence 

 is obtained, however, if with Henning') we use a quadratic relation. 



ij F. Henning. Ann. d. Phys. (43), 282, 1914. 



2) H. ScHiMANK. (Ann. d. Phys. (45), 706, 1914) states, that, for x = 0,03, a 

 differenee of 0,1—0,2 of a degree is to be expected, which agrees with the 

 difference found here of -jV of a degree for a = 0,0073. 



3) F. Henning. Ann. d. Phys (40), 635, 1913. 



