Abstract
1. Examination of samples of soil from 106 localities by enrichment culture technique gave 37% toxic samples, the percentage containing Clostridium botulinum ranging from a certain 5% to a possible 14%. 2. Cl. botulinum type A was shown to be present in four of the five positive samples, type B in one. Characteristics of a pure culture of type A are given. 3. Incidental data on the occurrence of some other toxigenic anaerobes are given.