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SATURDAY, JUNE 30, 1917
ALTITUDE AND THE AVIATOR
Several years ago1 we remarked that the conquest of the air has brought problems bordering on the field of the physiologist and the physician as well as on the domain of engineering. The unanticipated usefulness of the aeroplane in connection with the present war has given an added significance to this statement. The aviator has become an indispensable adjunct to every well organized military unit, so that his personal wellbeing must form a topic for consideration in military hygiene. The expression "mal des aviateurs," or aviator's sickness, has already found its way into medical literature.The most fundamental physiologic problem with which the navigator of the