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Raymond C. Coburn, M.D.
JAMA. 1938;110(11):831. doi:10.1001/jama.1938.02790110057019.
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To the Editor:—  In a communication to The Journal, January 22, page 304, Prof. Yandell Henderson apparently erred inadvertently as to what constitutes the Flagg technic in initiating respiration in the new-born. This technic is not the insufflation of oxygen deeply into the trachea under conditions which permit a free escape of the gas but is such an insufflation with the escape of the gas so controlled that the lungs are alternately inflated and partially deflated by varying the intrapulmonary pressure caused by the volume of insufflated oxygen (Flagg, P. J.: Art of Anesthesia, ed. 5, p. 391).The work of Meltzer (The Journal, May 10, 1913, p. 1407) showed that the blood could be oxygenated without respiratory effort of the subject when the amount of insufflated air or oxygen was sufficiently large. But in all these subjects the lungs had been previously expanded in physiologic use for a long


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