DAVIS. — THE LAW OF CORRESPONDING STATES. 261 



F 300° 



400 



500 



GOO 





Figure 7. Joule-Thomson coefficient in ordinary units. In the lower part 

 of the figure these are Centigrade degrees for a pressure drop of 1 kg. per sq. 

 cm. (scale at left). In the upper part they are Fahrenheit degrees for a pres- 

 sure drop of 1 lb. per sq. in. (scale at right). 



18 means of Table VI added as large circles. The six small circles near 

 t=l are Kester's carbon dioxide points, the other carbon dioxide points 

 being omitted for clearness. The other points in the figure are easily 

 recognizable on comparison with Figure 1. 



