Properties of Gases and Vapours, 



275 



straight lines inclined at different angles to the axis, but all intersecting 

 at the same point, v/V 1 when p = 0. These lines are drawn for 

 each 20 of temperature in the figure, and are all represented as 

 terminating in the saturation curve, although, as a matter of fact, it is 



99 



-98 



. -97 



*t> 



95 



o -94 



1 



53 



V 



O .92 



91 



90, 



O-2 



of Pressure for o-/ooC. 

 O-6 OO I-O <3,tmO3. 



OOTx. 



4.6 5 10 IB M 



Sc&Le of Pressure in Atmospheres. /(X?-OoC. 



Fig. 1. Specific volume of steam. 



possible to suppose them produced beyond it, if condensation does not 

 occur. The first part of the curve up to 100 C. is represented on a 

 ten times larger scale of pressure in the upper part of the figure. It 

 will be observed that the whole deviation from the ideal volume at 

 100 C. is only 1'5 per cent, at saturation-pressure. This method of 



x 2 



