8 PROPERTIES OF STEAM AND OTHER VAPORS. 



The equation may be writt 



The calculation of the values of the constants gives the following results 

 for latitude 45 : - 

 French unit-. 



B. For o to 100 C., mm. of mercury, 



log A 8.8512729 10. 

 log B - 6.69305 - 10. 

 log a, - 9.996725828 - 10. 

 log ft 0.0068641. 



C. For 100 to 220 C., mm. of mercury, 



log 4 - 8.5495158 - 10. 

 log B = 6.34931 - 10. 

 log a, = 9.997411296 10. 

 log ft = 0.0076418. 

 English units. 



B. For 32 to 212 F., pounds on the square inch, 



log A = 8.5060005 10. 

 logB = 6.43778 - 10. 

 log or 2 = 9.998181015 10. 

 log ft = 0.0038134. 



C. For 212 to 428 F., pounds on the square inch, 



log ,4 = 8.2942434 - 10. 

 log B = 6.09403 10. 

 Ioga 2 = 9.998561831 - 10. 

 log ft = 0.0042454. 

 The following table gives values for several other vapors: 



