EFFECTS OF DEPRIVATION OF OXYGEN 



229 



"= 



June 3, 1919. No. 6889, second lieutenant, bomber, twenty-six, single, con- 

 struction engineer. 



Sixty hours flying, none over lines. Physical condition good. 



Run was preceded by 13 minutes' rebreathing during which the oxygen was 

 replenished as consumed. 



Owing to the low speed and the only fair accuracy, a steady increase in per- 

 formance was shown until the later stages of the run. Increase of effort com- 

 pensated for impairment until the final series. When the experiment was termi- 

 nated he was repeating two letters over and over again, and was on the verge of 

 fainting. (The cardiovascular failure occurred after the last systolic blood 

 pressure reading was recorded.) 



PSYCHOBIOLOGT, VOL. II, NO. 3 



