1 A roundtable discussion on bacterial pigments was held on the afternoon of April 30, 1956, at the Society of American Bacteriologists Meeting in Houston, Texas. Participants were: Herman C. Ellinghausen, U. S. Department of Agriculture, Beltsville, Maryland; James A. Green, Baylor University College of Medicine, Houston, Texas; Roger L. Harned, Commercial Solvents Corporation, Terre Haute, Indiana; William C. Haynes, Northern Utilization Research Branch, U. S. Department of Agriculture, Peoria, Illinois; José A. Rivera, Surgical Research Unit, Brooke Army Medical Center, Fort Sam Houston, Texas.