114 PROCEEDINGS OF THE AMERICAN ACADEMY 



For the air thermometer with constant volume 

 T— 100 P* — Po. 



PlQO — Po 



.«. f=fr- ft )(l+ M D(l_i)); 



or, since D = 1, 



,*- K, = ^- .00088 T^=^, 



from which I have calculated the following table of corrections. 

 TABLE XVII. — Seduction of Air Thermometer to Absolute Scale. 



It is a curious circumstance, that the point of maximum difference 

 occurs at about the same point as in the comparison of the mercurial 

 and air thermometers. 



From the previous formula, and from this table of corrections, the 

 following tables were constructed. 



