Tetany Involving the Rectus Abdominis

Abstract

perform a-ersion, tlius overcoming tlle miiuscular spasm .ndl relaxinig the perineum. Professor Blair Bell has been in the lhabit for miiany years now of measurinlg the transverse diameter of the pelvic outlet in cases requiring the repair of complete lacerations of the perineum; he hias constantly founid this to be so iiarrowed that the head must have beien forced further lack than niormal in the process of delivery, and the perineum inevitably and completely lacerated.-I am, etc., Liverpool, Nov. 29th. M. M. DATNOW.