Prof. Ebbinghaus presented an interesting new method of testing the mental capacities of school children, which I have already outlined in the Nation for September 10th.
President Hall, of Clark University, was to speak in one of the general meetings, but did not attend. Prof. Preyer, who is known for his excellent books on the child's mind, presented a general treatment of "The Psychology of the Child."
In the sections much exact work was done. It would be impossible, in the space I have, even to cite the different papers; so I shall have to leave the reader to consult them in the Proceedings. There were, besides the regular programme, several things of the nature of "side shows" which deserve comment. In the first place, there was an exhibition of apparatus, containing many interesting and some new things, under the charge of Dr. Marbe. Then the members of the congress were treated to a demonstration of the Röntgen ray effect which has possibly not yet been surpassed anywhere. Led into a dark room, the observer was stationed before a prepared screen about two feet square or more, and behind the screen a boy was gradually passed at the same time that the Röntgen rays made the screen fluorescent. The shadow outlines of the internal organs of the boy were clear—lungs, heart, etc.—and the movements of these organs in regular rhythm were plainly seen. This exhibition excited great enthusiasm among the members of the congress. Another rather sensational "side show" was the exhibition made of an Indian yogi, who went off into his sleep in a private room for the edification of some of the psychologists.
The next psychological congress is to meet in Paris in 1900, in connection with the French Universal Exposition. Prof. Ribot, who is considered the official representative of psychology in France, is again made president, and M. Ch. Richet vice-president. M. Pierre Janet will be secretary. The international committee for the next meeting has four American representatives—Profs. James, Hall, Titchener, and the present writer. There seems to be a general feeling that America should have the congress soon; indeed, the going to Paris for a second session is a matter of special consideration in view of the coming exposition.
The other congress of which I have promised to write briefly is that of "Criminal Anthropology": the fourth, which met in Geneva in the last week of August. This congress has had about the same lease of life as that for psychology, the earlier sessions having been held in Paris, Rome, and Brussels. It aims to be official, and invitations to take part are sent to the different Governments. This year quite a remarkable array of governmental appointees were in attendance. It seems that this policy is somewhat doubtful, from the point of view of science, since
