Ritter's Disease

See Dermatitis exfoliativa neon a to rum and Diseases, Table of. R.'s Law of Contrac- 1 tion, " a nerve is stimulated both at the moment of the occurrence and that of the disappearance of elecj trot on us: (i) When the current is closed, the stimulation occurs only at the kathode, i.e., at the moment! when the kathelectrotonus takes place; when the current is opened, stimulation occurs only at the a i.e., at the moment when the an electrotonus appears." (Landois and Stirling.) R.'s Opening: Tetanus. See Tetanus. R.'s Tetanus, a temporary tetanic state caused by sending a constant cum electricity to a nerve and then suddenly interrupting it. R.-Valli Law, "If a nerve be separated from its center, or if the center die, the excitability ol nerve is at first increased; the excitability then falls until it disappears entirely. This proce take-! place more rapidly in the central than in the peripheral part of the nerve, so that the peripheral end nerve separated from its center remains excitabh longer time than the central end." (Landois UK Stirling.) See Law.