Transactions Society Naval. Architects and Marine Engineers, Vol. 2J, igip. 



Plate 6 9 



To illustrate f^aper on "Nezv Developments in High Vacuum Apparatus,' 

 by G. L. E. Kothny, Esq., Member. 



^^ 





R 



S 



§ 



«> 



N 



^ 



Cutves giving weigHt of water vapor in pounds per pound of 



dry air for different absolute pressures and different temperatures. 



HORRIS PcTERS, ItlC.. LlTHO., WASHINGTON. 0. C. 



