For the methods of making speech inscriptions: Rousselot, “Elements de la phonétique expérimentale,” Par., 1897-1900; Scripture, “Elements of Experimental Phonetics,” Yale University Press, 1902. For speech studies in various diseases: Scripture, “A New Method of Studying the Pathology of Speech,” Proc. Roy. Soc. Med. (Sect. Path.), November, 1916; “Speech Records in General Paralysis,” Quart. Journ. Med., October, 1916; “Speech Records in Disseminated Sclerosis,”Brain (in press).