<h3>CALIFORNIA</h3><h3>San Francisco and Antioch Begin Fluoridation.</h3> —California's third and fourth cities to fluoridate their public water supplies recently began operation. Initially, about one third of San Francisco's area, practically all of which is residential district, will receive the fluoridated water. This is about 70% of the total population. <h3>Outbreak of Malaria.</h3> —According to Dr. Wilton L. Halverson, State Director of Public Health, California's first outbreak of locally acquired malaria since 1945 has resulted in at least 10 cases of the disease among campfire girls who attended summer camp in a remote area of Nevada County. All cases were of the Plasmodium vivax type. Source of the original infection apparently was a Korean veteran who had a malaria relapse while camping near the area where the other cases subsequently occurred. <h3>Morris H. Nathanson Memorial Lectures.</h3> —The Nathanson lectureship in cardiovascular and renal physiology and pharmacology has been established at the