PHILOSOPHICAL PERIODICALS. 281 PSYCHOLOGICAL REVIEW. Vol. vi., No. 6. J. H. Lcuba. 'On the Validity of the Griesbaeh Method of Determining Fatigue.' [A careful of work, the general outcome of which is that, if the limen of tactual duplication vary with fatigue, it is still so largely dependent on other factors (temperature, thickness of epidermis, peripheral blood- supply ; the general psychophysiological state of the subject, conditions of attention) that it cannot serve as an index of the fatigue-state. The conclusion is thus opposed to the results of Griesbach, Wagner and Vaimod.] Q. B. Germann. ' On the Invalidity of the -lEsthesiometric Method as a Measure of Mental Fatigue. [In one normal case, the limen of tactual duplication bears no constant ratio to the fatigue-state of the subject] W. P. Montague. 'A Plea for Soul-Substance (II.).' [At- tempts to characterise soul- substance by way of a search for limiting forms (perfect types) of mechanical or material and of teleological or mental relation. Result : the soul differs from a Ding an sich in that it is known to exist under a form of its own, the moral form ; and it stands to its attributes in that double relation whereby it is at once the common genus of both and a distinct species of each.] Discussion and Reports. H. Davies. 'The Growth of Voluntary Control.' [A plea for volun- tarism v. mechanism, growing out of Ladd's Eigenlicht experiments. (1) Will as tact ; (2) the lack of demarcation between spontaneous and con- scious control ; (8) teleological control, or ultimate self-control.] T. P. Bailey. ' Ethological Psychology.' [Reply to Bliss.] OK V. N. Dear- born. ' Sensational Attributes and Sensation.' [The term ' sensation ' is worse than useless in psychology.] H. P. Washburn. ' After- images.' [Reply to Franz.J Psychological Literature. New Books. Notes. REVUB PHILOSOPHIQUE. January, 1900. Dr. E. Tardieu. ' L'Ennui : Etude Psychologique ' (i.) [This state may be induced by (1) physical and mental fatigue, resulting from age or constitutional predisposition ; (2) lack of variety or impotence of faculties, e.g., idiots, weak persons, etc.] A. Bertrand. ' L'Enseignement scientifique de la morale.' [Scientific instruction in morality must be preceded by scientific study of man. In a four years' course the first should be devoted to (objective) psychology, the second to logic, the third to sesthetics, and the fourth to sociology and economics.] A. Schinz. ' Sens commun et philosophic.' [Common sense cannot explain given facts, is often self-contradictory, and instead of solving problems creates them. Hence it can never be a substitute for philosophy.] Recherches Experimentales. B. Bourdon. 'L'Acuite stereoscopique.' C. He'mon. 'Deux lettres inedites de Proudhon.' Analyses et comptes rendus. February. L. Winiarski. 'L'Energie sociale et ses mensurations.' [A study of the transformations of biological energy presented within the sphere of sociology.] Evellin et Z. ' L'infini nouveau.' Dr. E. Tardieu. 'L'Ennui I'H.). [Further causes of ennui are (3) vie manquee, e.g., the poor, old maids, etc. ; (4) Monotony, e.g., in professional life, marriage, etc.] Recherches experimentales. Dr. E. Toulouse et N. Vaschide. ' L'Asym^trie sensorielle olfactive.' Analyses et comptes rendus. Revue des periodiques etrangers (Philosophical Review). Necrologie. Varu'tc's. March. A. Lalande. ' Progres et Destruction.' [Progress consists in the destruction of forms of social organisation which have grown up through the interplay of non-rational tendencies. This destruction is coincident with the growing influence of reason and the growing recogni- tion of man as a rational being. Its direction is always towards freedom and equality and its principle is that all men should be free and equal in so far as they are reasonable beings. The anarchist commits a fallacy