Showing the valvulotome within the mitral valve

Intended for a paper delivered by Manly Stallworth for Dr. Smithy. Black and white illustration includes two inset illustrations, magnifying a portion of the valvulotome instrument and its usage during the surgical procedure. "Schlossberg," appears in the bottom, right corner of the parent illustration. The caption, "Portion of anterior leaflet to be punched out," appears in the top, right corner, above the first inset illustration. "Instrument lodged against anterior leaflet," appears between the inset illustrations. "Cross-section," appears in the bottom, right corner, below the second inset illustration