The following paper embodies the conclusions derived from an investigation covering one year and five months. At the outset all preformed opinions were relinquished and a true spirit of unbiased investigation prevailed. Realizing that it is far easier to teach one wholly ignorant than to controvert preformed opinions, I placed myself in the attitude of a beginner. At the outset I was a partisan of certain operative procedures and certain methods of technic, but this investigation has shown me the narrowness of this attitude. The indications for any certain procedure or technic are inherent in the individual case, not in the predilection of the operator. It is, then, a modest following of the example of Herodotus in that it is "a setting forth of investigation."
As a basis of my study I carefully tabulated the results of one hundred tracheloplastic operations performed at the Free Hospital for Women. A