discoverer of the tubercule bacillus, champion of pure culture techniques, and formulator of Koch's Postulates. Miller proposed the bacterio-chemical theory of dental caries, and his work, "Die Mikroorganismen der Mundhohle" (Micro-organisms of the Human Mouth), published in 1889 (Miller, 1890), is one of the classics in dental literature and a landmark in dental education. This treatise is thought to have re-oriented the dental profession from treatment to prevention.The study of bacteriology was instituted as a new course for third-year dental students in 1896.