A little over a year ago we stated1 from facts then known that ankylostomiasis or uncinariasis was apparently a rare affection in the United States. Later data have modified this view, numerous cases have been observed, one of which very completely reported is published in this issue. During the past few weeks, moreover, some very important observations have been made in the Carolinas and Georgia, which are not only of great scientific interest, but which also will probably be of great value in improving the economic and physical conditions of the poorer population of some of the southern states. These observations have led to the discovery that "hook-worm" disease is extremely prevalent among the poorer classes of the southern whites.
Ankylostomiasis, or, more properly speaking, uncinariasis, has for generations prevailed more or less extensively in various parts of Europe and in Egypt. It is known under various names, such