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PROCEEDINGS OF THE AMERICAN ACADEMY. 



coefficient, each of which is assumed to correspond to the mean of the 

 high and low side temperatures from which it was obtained. The 

 values of the coefficient have been "reduced" by multiplying by 2.56, 



TABLE I. 



Summary of Grindley's Throttling Experiments. 



a factor which is the ratio of the critical pressure of water expressed in 

 pounds per square inch (2947 lbs. per sq. in. or 200 atmospheres 5 ) to 

 its critical temperature in Fahrenheit degrees absolute (1149° F. abs. 

 or 365° C. ord. 5 ). The results are summarized in Table I, which gives 



» Cailletet and Colardeau, Jour, de Phys., 1891, 10, 333. 



