“…This mortality is somewhat higher than that reported by jemerin.l" Doig,'" Mathewson, et ap6,17 Bogedian," Nealon, et al, 19 Elner and Dahlback.P and Bailie, et a1. 2 They report a mortality with instrumental perforations between 17 and 30 per cent. The difference in this series might be accounted for by the fact that patients with injuries other than instrumental perforations were included in the present study.…”