XXII. FOR SHOWING THE DIFFERENCES IN THE VALUES OF THE ELASTIC 

 FORCE OF AQUEOUS VAPOR, ADOPTED BY DIFFERENT AUTHORITIES. 



FORCE OF VAPOR EXPRESSED IN ENGLISH INCHES FOR TEMPERATURES 

 OF FAHRENHEIT. 



Temper- 

 ature 

 of Air, 



Fahren- 

 heit. 





 10 

 20 

 30 

 32 



40 

 50 

 60 

 70 

 80 



90 



95 



100 



Force of Vapor accordiDg to 



Eng. In. 

 0.064 

 0.090 

 0.129 

 0.186 

 0.200 



0.263 

 0.375 

 0.524 

 0.721 

 1.000 



1.360 

 1.580 



1.860 



Green- 

 wich 

 Observa- 

 tions. 



Eng. In. 

 0.061 

 0.089 

 0.129 

 0.186 

 0.199 



0.264 

 0.373 

 0.523 

 0.727 

 1.001 



1.368 

 1.594 

 1.8.52 



Royal 

 Society. 



Eng. In. 

 0.051 

 0.078 

 0.116 

 0.172 

 0.1S6 



0.251 

 0..S61 

 0.516 

 0.723 

 1.005 



1.380 

 1.562 

 1.874 



August. 



Eng. In. 

 0.053 

 0.082 

 0.124 

 0.184 

 0.199 



0.269 

 0.390 

 0.5 47 

 0.766 

 1.058 



1.442 

 1.677 



Eng. In. 

 0.048 

 0.074 

 0.112 

 0.166 

 0.180 



0.244 

 0..354 

 0.505 

 0.710 

 0.988 



1.3.54 

 1.581 



Magnus. 



Eng. In. 

 0.044 

 0.070 

 0.108 

 0.164 

 0.178 



0.245 

 0.359 

 0.517 

 0.733 

 1.025 



1.412 

 1.649 

 1.921 



Regnault. 



Eng. In. 

 0.043 

 0.068 

 0.108 

 0.167 

 0.181 



0.248 

 0.361 

 0.518 

 0.733 

 1.023 



1.410 

 1.647 

 1.918 



Temper- 

 ature 

 of Air, 



Fahren- 

 heit. 





 10 



20 

 30 



32 



40 

 50 

 60 

 70 



80 



90 



95 



100 



FORCE OF VAPOR EXPRESSED IN MILLIMETRES FOR CENTIGRADE 

 TEMPERATURES. 



Temper- 

 ature 

 of Air, 

 Centi- 

 grade. 



-20 

 -15 

 -10 

 - 5 

 



+ 5 

 10 

 15 

 20 

 25 



30 

 35 

 40 



B 



153 



