INTESTINAL APLASIA The rarity of intestinal occlusion is shown by the reports from St. Petersburg (Petrograd, Leningrad) where only nine cases were found in 150,000 necropsies, from Vienna where two cases were found in 110,000 necropsies, from Moscow where thirty-six cases in 65,000 necropsies and from Copenhagen where two cases in 41,000 necropsies were found. The usual ratio is considered 1: 20,000, although it is well known that many infants are not examined post mortem, but are said to have died of a "weakened condition." The foregoing reports include occlusion from all sources. Those cases in which the condition is due to aplasia would be even more uncommon. It is important, therefore, that more postmortems should be sought, and it is with this plea in mind and because of the rarity of occurrence of intestinal aplasia that this paper is submitted. No attempt will be made to discuss all of