Malaria on Ambootia Tea Estate near Kurseong and the Success of Some Anti-Malarial Operations

ant subject, for visitors do not go to them to spend their holiday abed with fever. Any contribution, therefore, to our knowledge of the subject may be helpful. The observations now recorded were made in May 1923 during a visit to Ambootia Tea Estate. Kurseong, about 3.000 feet above sea-level in the Eastern Himalayan foothills. They indicate the salient factors which determine malaria incidence on the estate; and their analysis throws into relief the effect of the anti-malarial operations which had been initiated with uncommon enterprise bv the Manager. Mr. A. O Brien-Webb, at the instigation of the Visiting Medical Officer, Dr. Kingsley-Ward. The nature of the operations was mainly the drainage of swamps and training of streams. In the course of the work the first point considered was whether the rainfall had anything to do with the malaria-rate. Generally speaking when a malaria-rate