Hall is remembered for a method of resuscitating the drowned, the Marshall Hall method of artificial respiration, which was widely employed until other ways of restarting respiration were introduced by Henry Robert Silvester (1829-1908) and Edward Sharpey-Schâfer (1850-1935). According to the Hall method, the subject was first placed in the prone position and pressed upon the back, causing an active expiration. He was then turned over on his side, with the shoulder raised, to bring about an active inspiration.