The intermingling of men from the tropics and of troops which had seen service in regions where amebic dysentery is widely endemic with our own troops on the western front during the war has opened possibilities of increased infections byEndamoeba dysenteriaeand other intestinal parasites. This is especially possible in cases of dust-borne, fly-borne or water-borne infections in which ova or cysts from the stools of infected men find their way into the food or water of troops in the trenches or in the even more exposed conditions attending a rapidly advancing army. EXAMINATIONS FOR INTESTINAL PARASITES Examinations of 1,200 men of the United States army who had been in overseas services, and of 300 men from home service troops, have made possible the following preliminary account of the relative degrees of infection in these two groups of men. This work has been carried on at the Army Laboratory,