Hysteria in children was first described by Ranvlin, in 1748. Before him, in 1681, Lepois had ventured to combat Hipprocrates' view that it was a uterine disorder, and heretofore only a female complaint, but he had not gone beyond this. Nor did Ranvlin treat of the subject in a clear manner. It remained for Briquet, in 1855, to show that it did occur in children, and as frequently as in adults. At that time Carter and Brodie had already published their admirable articles on hysteria in adults, but they had ignored its presence in childhood. Since Briquet's time, Bourneville, Baginsky, Tourette, Casaubon, Ollivier, Clopault, Richer, Charcot, etc., have enriched the literature on the subject. To-day it is generally accepted that hysteria is not rare among children, and that as a children's disease it dates from antiquity, as witness the children's crusades, the epidemics of chorea magna, the tale of the