The plan is one of great simplicity, And consists in encircling the root of the penis in a common elastic ring made of vul-caniz>d indiarubber. such, in fact., as ig used for stationery pur. pose?. l.et the bladder be emptied the last thing a,t rii"!it ; the ring is then to be applied, and must be rotai: ed during the night, antI removed early in the tnortting. It ussy be also used during the day if the bladder is irritable, which is not uncommonly the case.