208 



H. M. JOHNSON AND FRANKLIN C. PASCHAL 



Ob^rwn: tlj_-i*MJL_- Phyi.ftP.Jj. Kettaren.. Cant. Jyhngom... ....... _ ^.h 



May 26, 1919. No. 6887, second lieutenant, observer, twenty-five, single, 

 banker 



Seventy-five hours flying. Maximal altitude 15,000 feet for 5 minutes. 



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

 replenished as consumed. 



Both the speed and accuracy were somewhat low. Final deterioration began 

 at the 18th minute coincident with the beginning of a controlled drop in diastolic 

 blood pressure, reaching complete inefficiency at 29 : 10, when he was taken off by 

 the psychologist. He was then deficient in motor control and at the end had 

 superimposed four letters. 



