In Les Origines de la Technologie M. Espinas aims at giving a history of philosophy in action. The present paper is devoted to physico-theological technology, and concludes with the observation that it was undoubtedly a progress to conceive the technical arts as a whole, as a divine gift in like manner as the fruits of the earth and the beneficent phenomena of nature, since this conception by opposition gave rise to the idea of art, that is of human initiative acting differently according to diversity of circumstances.

In L'Inhibition dans les Phénomènes de Conscience M. Alfred Binet explains certain phenomena by showing that under various circumstances certain images and sensations cannot coexist with others in the same field of consciousness; the presence of one excludes that of another. Antagonism and exclusion are the two simple facts which explain the phenomena in question.

La Géométrie Générale et les Jugements Synthétiques a priori is a reply by M. G. Lechalas to an article by M. Renouvier in the Critique Philosophique criticising M. Calinon's theory of geometrical spaces embodied in the system of "general geometry." While showing that spaces with three dimensions are rationally included in a space with four dimensions, M. Lechalas recognises the impossibility of establishing such a geometry, seeing that we have no figure that answers to what a four-dimensional space would be, as well as the purely formal character of the presentations of non-Euclidian figures. (Paris: F. Alcan.)

ZEITSCHRIFT FÜR PSYCHOLOGIE UND PHYSIOLOGIE DER SINNESORGANE. Vol. I,
No. 2.

CONTENTS:

UEBER DIE WAHRNEHMUNG UND LOKALISATION VON SCHWEBUNGEN UND
DIFFERENZTÖNEN. By Carl L. Schaefer.

DIE ASSOCIATION SUCCESSIVER VORSTELLUNGEN. By H. Münsterberg.

BRIEFE VON G. TH. FECHNER: UEBER NEGATIVE EMPFINDUNGSWERTE.
(Concluded.) Edited by W. Preyer.

LITERATUR-BERICHT.

The results of Mr. Schaefer's researches are that for the localisation of the vibrations of two tones, in the case of their unequal relative intensity, the direction and distance of the relatively louder tone are determinate. If the relative intensity of the primary tones is equal, the vibrations are heard to proceed from the region between the two sounding points. Differential tones are heard between the ears, when the sounding sources are in the median plane; but when both primary tones come from the same side, in or immediately before the ear on that side; and in case of unequal intensity, when both come from different sides, on the side of the softer sound.