EFFECTS OF DEPRIVATION OF OXYGEN 



211 



.!S 2* Lt., i-llo-.. j:iia 



oi,irv.: apt. BogftMphy.. Cpt . Eonera ciin Dr 

 On nwhiM m.. SlncU.fi... Pioiud by Pvt .. Lowey 



April 9, 1919. No. 355, second lieutenant, Air Service, pilot, twenty-four, 

 married, student. 



Returned as casual from overseas. Seventy-six hours of flying, 30 hours 

 overseas, 1 hours over lines. Maximal altitude, 12,000 feet for 120 minutes. 



Present health good. Disturbed by insertion of mouthpiece before 5th set 

 presented before rebreathing began. (This is plotted by mistake on the zero 

 abscissal coordinate.) Recovery and improvement. Gradual deterioration 

 from 16th minute, 11 to 12 per cent C>2. In fainting condition when removed. 

 Inefficiency concurred with circulatory break. Duration of test, 28 minutes 

 40 seconds. 



