The medical problems of flying, including reports nos. 1-7 of the Air medical investigation committee (1920)
Medical Research Council (Great Britain) · London H.M. Stationery off · leaf 57
49 13 per cent., but the change in pulse-piessure is not so definitely subnormal. The sj'stolic pressure remained fairlj- constant. Of thi- .sj'uiptoms sleepiness was the most prominent, often associated with little distress, and in some cases scarcely realized by the patient himself. … Tims ifi J^inutes. Chart 15. (See Table F, 48.) This type of case appears to react to altitude by a general lower- ing of activity, and these symptoms must be regarded of consider- able importance because the individuals do not realize how iuefiicient they are when doing any kind of work on…
Air pilots · Aviation medicine
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.