DAVIS. 



CERTAIN THERMAL PROPERTIES OF STEAM. 



293 



the last of each set of columns. The chief disagreement is along 

 curve 1 where Knoblauch's curves are too condensed. This means 

 either that his curve at atmospheric pressure should be lower, or that 

 the lower part of his saturation curve, with the constant pressure 

 curves near it, should be higher. The first of these possibilities would 

 mean even less agreement between Knoblauch and Regnault than at 

 present, and may therefore be rejected. The remaining possibility has 

 already been suggested by the result obtained from Griessmann's 

 truism (see page 290). Furthermore, it will be corroborated again in 

 the next section (see page 300). It may therefore be accepted the 

 more readily here. 



At very high superheats, where the method is most valuable, the 



TABLE V. 



Cp Ratios obtained from the Joule-Thomson Effect. 



