SICCARDI, "Considerazioni su la fisiopatologia e su la teoria del tic," Annuario del manicomio provinciale di Ancona, Anno II, 1904.

(Eighty-eight references to the literature, chiefly Italian.)

SICURIANI, "Contributo allo studio del tonomioclono," Riforma medica, January 20, 1904, p. 57.

SILVESTRINI, "Spasmo clonico diffuso," Medicina contemporanea, 1884, p. 83.

SIMON, "Une nouvelle variété de spasmes musculaires fonctionnels," Thèse de Paris, 1875.

SINKLER, "Habit Chorea," American Journal of the Medical Sciences, May, 1897, p. 559.

SMITH (NOBLE), "Spasmodic Torticollis: its Cure by Operation," International Medical Congress, Rome, 1894, Section of Surgery, p. 273.

—— "A Case of Spasmodic Torticollis associated with Chorea," Clinical Journal, May 10, 1899, p. 41.

—— "Spasmodic Torticollis," British Medical Journal, vol. i. 1899, p. 908.

SOLGER. See STEYERTHAL.