DAVIS. 



CERTAIN THERMAL PROPERTIES OF STEAM. 



307 



TABLE VIII. 



The Law of the Straight Diameter for Steam. 



120° can, however, be represented with an average deviation of about 

 one ninth of one per cent by the formula 



5 = 0.4552-0.0004757 (t- 160) -0.000000685 (t— 160) 2 gr./cm. 8 

 It should be noticed, in judging of the reliability of the formula, that 

 comparatively large relative errors in the density of steam make only 



