The diagnosis must be accurate and the anæsthesia carried to the surgical degree.

Facilities for treating asphyxia neonatorum must be provided.

The following summary of the indications and conditions may be convenient for reference.

Indications.—Contracted pelvis. (Consider pubiotomy.)

Abnormal position of the head. (Face position with chin posterior.)

Prolapse of cord or an extremity with a presentation of the head.

Placenta previa.

Transverse position after the seventh month.

Any condition requiring rapid delivery.

Conditions.—Cervix effaced and os dilated.