The Prevention of Malaria.

To every specialist the particular subject in which he is interested acquires great importance, so that we naturally expect Dr. Ross to estimate highly the importance of malaria. Still we are not accustomed to yield it first place in professional regard, as he does when he says that "malarial fever is perhaps the most important of human diseases." This, however, he supports with the statement that in India, it is estimated that the average annual death-rate from this disease is 1,130,000 persons. Ross believes that malaria has profoundly modified the world's history by rendering the tropics unsuitable for the full development of civilization and that it therefore becomes a political disease, affecting the welfare of whole countries, and one whose prevention should be an important branch of public administration. The author has adopted the plan of giving a general summary of the history and facts regarding the causation and prevention