摘要:THE UNRESTRICTED SUBJECT of Rocky Mountain spotted fever assigned to me on the symposium this afternoon could be a very ambitious one for the time available. I shall confine my contribution, however, to a few general remarks which should be of aid for orientation in the problem, preliminary to the showing of slides and the moving pictures, and which of necessity may seem rather elementary to some of you already acquainted with the literature on the disease. Because of the accompanying screen material my comments will be presented very informally.