“…may be compared with the aggregate of four other series (Levin, Rivo, Scott, Figueroa, Fred, and Barrett, 1953;West and Newns, 1953;Kemper, Baggenstoss, and Slocumb, 1957;Johnson, Smyth, Holt, Lubchenko, and Valentine, 1959). In a total of 271 necropsies, polyarteritis was reported in eleven cases (4 per cent.).…”