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Show Aviator's Heart Enlarged. Doctors Etienne and Lamy of Nancy, France, have conducted a series of X ray examinations of "the hearts of aviators anil have found evidence of considerable enlargement. The heart enlargement sets In early In the flying fly-ing man's career, being noticeable after five months of experience in the air. The degree of enlargement Is roughly proportioned to the height at which 1 lie aviator is accustomed to fly, so that simple examination of the X-ray plate suffices to determine a man's branch of flying service; whether he is doing chasing and bombing work at high altitudes, or !s engaged at harrying infantry, etc., at comparatively low altitudes. The enlargement seems to be symmetrical, sym-metrical, and it does not appear to involve in-volve serious trouble. It is due to the heart's adapting itself to the extra ex-tra work put upon it by changes in the blood circulation because of the varying conditions in the atmosphere through which the aviator flies and to the general happenings incident to aviation. |