which prevents a reflux of fecal matter from the colon to the small intestines, and demonstrated its function to his students. He also was the first to identify the vessels in the abdomen which were later called lacteals because of their milky appearance after meals.

His contributions to practical medicine were also important. He was the first to use an aural speculum for the diagnosis and treatment of diseases of the ear, and his writings on surgical subjects are still of interest. After