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This is a brief history of the bacteriology of bacillary dysentery from the time of its differentiation from the amoebic disease up to the present time. It is meant to be a story of events rather than a critical essay. A certain amount of background has been introduced to indicate the problems of identification and classification of the various bacterial types of the disease. Inevitably more space has been given to the mannite-fermenting organisms since the problem of their antigenic structure and interrelationship took so many years to solve. The events leading up to the present serological classification of the dysentery bacilli are set out and certain other problems e.g., those related to the carriage of Shigella antigens by other members of the Enterobacteriaceae are discussed.
H. J. Bensted (Tue,) studied this question.