Col. John H. Voegtly, M. C., was named executive officer to the Army surgeon general in Washington, D. C., replacing Col. Bryan C. T. Fenton, M. C., who was assigned as commanding officer, Martin Army Hospital, Fort Benning, Ga.
PUBLIC HEALTH SERVICE
Natural Fluoride Content of Water.—
A new report entitled "Natural Fluoride Content of Communal Water Supplies in the United States," Public Health Service publication no. 655, may be obtained from the U. S. Government Printing Office, Washington 25, D. C. The water supplies of 1,903 cities and towns with a combined population of 7 million contain enough fluoride naturally to prevent most dental cavities. Communities in 43 states use water in which the decay-preventing fluoride occurs naturally. The fluoride found naturally in water is identical in its effect to the fluoride used in controlled fluoridation. The 1,800 cities now adding fluoride to the public water supply