Die Anophelen von Niederländisch-Ostindien.

In this edition a general part (about one fourth of the book) precedes the systematic part. The authors, while pointing to the great advances in knowledge concerning the epidemiology of malaria, draw special attention to the unsolved problems, some of these being (1) the presence in certain areas of malarial vectors without any tendency of the disease to spread, (2) sudden epidemics in regions where previously little infection existed, (3) the occurrence of malaria without the finding of anopheles, and (4) the best methods of control. They advocate throughout a thorough study of each locality to determine what species and varieties of Anopheles exist there, what their habits are, what their relation to malaria is, and how the more dangerous ones may be controlled. While subscribing to the tenet that a systematic and biologic analysis of the anopheline fauna of a malarial region is essential to an understanding of the