Transactions Society Naval Architects and Marine Engineers, Vol. 27. 19 ip. 



Plate TO 



\ 



To illustrate paper on "New Developments in High Vacuum Apparatus,' 

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



F\G.4- 



Slsigramatic sketch of 

 single stage eJeotor. 



F\&.5 



Sketch showing diagrsmatioally 

 the proper working ejeo^o^' 



Sketch showing diagramatically 

 the improper working ejector. 



NORRIS PETERS. INC., LlTHC, WASHrNGTON. D. C. 



