_Volkmann's Psychology._ Shows that the really important point in Volkmann's doctrine of "psychological mechanism" is its theory of the interaction of contemporaneous presentations, and of the existence among them of unconscious presentations. Herbartian psychology is strictly scientific system, but when its superfluous mechanism is cleared away, its explanations become those of associationism. In _The Logic of the Ethic of Evolution_, Mr. William Mitchell points out that the two conditions of an ethical end are that it be the motive of individual action, and that it furnish a critical system of universal laws; and further that those conditions are fulfilled by the end variously propounded in the ethic of evolution only if it be represented, not as an external limit forcing itself on men, but as presenting a more desirable character and medium to the individual than any other. The end and means of moral progress given by the Ethic of Evolution are perfectly true, but they do not express the essence of the matter. _The Antinomy of Thought._ This paper investigates an antinomy which infects all our thought of reality that is not intuitive. The source of error is the confusion of the judgment with the consciousness or intuition of reality. In the article on _Mental Tests and Measurements_, Prof. J. McK. Cattell describes certain tests which are used in the Psychological Laboratory of the University of Pennsylvania, with the object of providing data for the discovery of the rules which govern the constancy of mental processes, their interdependence, and their variations under different circumstances. _The Evolution of Inductive Thought._ A primary element in all experience is its inductive quality. The struggle of existence awakens experience to the thought-stage where it knows and directs itself, but this very slowly. Development precedes self-development, and this precedes a self-development which is self-conscious. This conclusion is confirmed by some analyses of thought in the divisions of conception, judgment, and reasoning. _The Genesis of the Cognition of Physical Reality._ This is a criticism by Mr. Julius Pikler of Mr. Stout's criticism on Mill, which appeared in the January number of _Mind_. His opinion is that Mr. Strong's statements are simply negations of Mill's theory, and as such prove nothing. _Some newly-discovered Letters of Hobbes._ These letters, seventeen in number, were written to the French physician Sorbière, and have been discovered by Dr. F. Tönnies in the National Library at Paris. All of them, with related letters of Sorbière and others, are given at length in the _Archiv f. Gesch. d. Phil._ iii. 58-71, 192-232, and the first nine, which are the only ones of real importance, are set out in this number of _Mind_. They have reference to the important period of Hobbes's life and work that led up to _Leviathan_ in 1651. (London: Williams & Norgate.) REVUE PHILOSOPHIQUE. No. 175. July 1890. CONTENTS: