EFFECTS OF DEPRIVATION OF OXYGEN 



217 



p>....Capt. Brom Cnn_ 



; Ptotttd by fYt. Lowey Q. 



Reip. in di). per n 



May 16, 1919. No. 6891, first lieutenant, pilot, twenty-seven, single, lawyer. 



Physical condition good. 



Forty hours flying, none over lines, no crashes or combats. 



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

 replenished as consumed. 



There was a tendency toward increase in performance level until the last 

 two series were reached, being partly due to decreased attention to the legibility 

 of his writing and partly to increased attempt to speed. When removed he had 

 become unable to make correct substitutions, this being coincident with a sudden 

 drop in diastolic blood pressure. 



