The importance of the consideration of our subject is evident when we observe the divergent views presented by different authors as to the instruments to be used in operations and the varying ideas as to anesthesia. That the subject is still uppermost in the mind of the specialist is evident from a consideration of this year's programs of the Section on Laryngology and Otology, where three papers out of a total of thirty-three are presented on the growths in the nasopharynx, and of this Section on Diseases of Children, in which three papers out of a total of thirty-nine are devoted to the same subject.
FREQUENCY AND CAUSES.
As to its frequency, opinions of authors are much at variance. Ingals of Chicago reports but 2 per cent. out of ten thousand private chest, throat and nose patients, while Frankenberg reports 59 per cent. in the 158 inmates of