This paper is written as an indication that in many ways New York is a center for the observation of tropical diseases, and in an effort to awaken a realization of the conditions obtaining in certain parts of the community. An occasional case of leprosy occurs in New York; beriberi, pernicious malarial fevers and other maladies, the early symptoms of which are not sufficiently severe to prevent the infected individuals leaving tropical countries, are not infrequent. Since the emigration of large numbers of people from northeastern Europe, since the intimate relations with the Philippines and Porto Rico subsequent to the Spanish War, and especially since the great influx of West Indians, individuals who are the hosts of a variety of most interesting intestinal and blood parasites have appeared at various dispensaries in New York.
It is a difficult matter to examine all patients that apply for treatment. By