JOHN SNOW (1813-1858) was an English physician, known as "the father of modern epidemiology" for his groundbreaking studies of cholera and medical hygiene. He also was one of the first doctors to study and use surgical anesthetics, such as chloroform and ether. Among his related works are On the Inhalation of the Vapor of Ether and On Chloroform and Other Anaesthetics and Their Action and Administration.
