This paper gives a thorough and complete discussion of all the medical, surgical and pathologic aspects of gas gangrene. It represents a balanced view of British experience in the subject, therapeutic as well as diagnostic. It is a sober, well balanced dissertation. In concise form and in simple language there are presented in order the clinical aspects of the disease, its prophylaxis and the laboratory methods of diagnosis. The bacteriologic portions are particularly good. Much ink has been spilled in the complexities of the etiologic anaerobes. That error is not made here. On the contrary, the laboratory procedures given have the double virtue of being short and accurate.