[Editorial Note.—This paper, together with the paper by Dr. Porter, concludes the symposium on obstetrics. In our last issue we published the papers of Dr. Ehrenfest, Dr. Crothers and Dr. Schroeder.]
Infant mortality and morbidity in breech labor continue high enough to command the serious attention of all physicians doing obstetric work. It is perhaps needless to repeat figures or to enumerate the types of injuries common to breech labor, or even to review or continue the excellent pathologic studies made in this field. The factors making for mortality might be reduced, somewhat dogmatically, to three accidents: (1) compression of the cord; (2) occurrence of a nuchal arm, and (3) difficulty in birth of the after-coming head. In all of these an immediate mortality may arise from suffocation during the delay before delivery can be effected, or, as in the latter two, a delayed mortality from the injuries sustained