The influence of a polluted water supply has long been recognized as a most potent cause of disease. Many virulent epidemics have been directly traced to this origin. The literature on this subject is so full of instances that it is needless to cite additional examples. Immediate closure of such water supplies in cities, when sewage bacteria have been detected, has been universally recommended. The recent report to the District Commissioners by the Bureau of Public Health and Marine-Hospital Service lays special stress on this point.
How much more is this danger augmented when such bacteria arc found in the water supply of the dairy farms. It is well known that few farms have the proper facilities for boiling the water that is used for washing the hands of the employés, the dairy utensils and the udders of cows. Such water readily contaminates the milk, which contamination is rapidly increased