^ 



Fig. 1. 



Labokatoey Liquefaction Apparatus for the production of Liquid Oxygen, &c. 



A, air or oxygen iulet ; B, carbou dioxide iulet ; C, carbon dioxide valve ; 

 D, regenerator coils; F, air or oxygen expansion valve; G, vacuum vessel 

 with liquid oxygen ; H, carbon dioxide and air outlet ; O, air coil ; f^, carbou 

 dioxide coil. 



