REPORT OF SPECIAL COMMITTEE ON COLLECTIVE INVESTIGATION OF DISEASE.

BY B. F. HART, M. D., CHAIRMAN, BROWNSVILLE, Mo.

Presented to Missouri State Medical Association, St. Louis, May 3, 1886.]

S a committee report on collective investigation of disease, the following is offered on malarial fever. Within the last four weeks, circulars asking questions bearing on the subject, have been sent to many counties in the state. Thirty-seven have been responded to by leading physicians residing at county seats. Counties heard from on the north side of the Missouri river are, Ray, Carroll, Chariton, Howard, Audrain, Warren, Linn, Andrew, Adair, Nodaway, Harrison, Putnam, Gentry, Buchanan, Boone, Platte, Clay; and those on the south side are, Saline, Cooper, Cole, St. Louis, Bates, Henry, Pettis, Hickory, Osage, Vernon, Phelps, Washington, St. Genevieve, Barton, Laclede, Cape Girardeau, Jasper, Taney, Wayne, Mississippi, making thirty-seven counties, and a pretty good show ing, as will be seen by referring to the fortunate distribution of these counties over the state, and ought to give a tolerably reliable index to the thought on the question in the state.

Twenty-three questions were submitted.

First. "Has malarial fever been very prevalent the past