This small volume should prove valuable to any one interested in the group of enteric infections caused by the typhoid Salmonella and dysentery groups of bacilli. Although Salmonella and the dysentery bacilli are rather widespread, their importance as pathogens has been so questioned by bacteriologists and physicians alike that their true importance has not been generally accepted. In the past few years more attention has been given the typhoid, Salmonella and dysentery groups of bacilli because of numerous epidemics of diarrhea in children and adults throughout the United States.
Dr. Leon C. Haven was director of laboratories of the Alabama Department of Public Health and had made special studies of these organisms for many years. Before his death he had about finished the first draft of his book, and his friend, Dr. Kenneth Maxcy, professor of preventive medicine at the University of Virginia, has ably edited the work. There is