Royer, Clémence. _Recherches d’optique physiologique et physique_ 320 Salter, William M. _First Steps in Philosophy_ 470 Schellwien, Robert. _Max Stirner und Friedrich Nietzsche_ 311 Schmidt, Johannes. _Die Urheimath der Indogermanen und das europäische Zahlsystem_ 149 Schmidkunz, Hans. _Der Hypnotismus in gemeinfasslicher Darstellung_ 317 Sharp, Frank Chapman. _The Æsthetic Element in Morality_ 650 Sidgwick, Alfred. _Distinction and the Criticism of Beliefs_ 312 Spencer, Herbert. _Social Statics and Justice_ 136 Sterne, Carus. _Natur und Kunst_ 323 Topinard, Paul. _L’Homme dans la Nature_ 146 Topinard, Paul. _L’Anthropologie du Bengale_ 322 Tufts, James Hayden. _The Sources of Development of Kant’s Teleology_ 312 Verworn, Max. _Die Bewegung der lebendigen Substanz_ 321 Williams, C. M. _A Review of the Systems of Ethics Founded on the Theory of Evolution_ 474 Wundt, Wilhelm. _Vorlesungen über die Menschen- und Thierseele_ 300 Wundt, Wilhelm. _Hypnotismus und Suggestion_ 315 Wundt, Wilhelm. _Grundzüge der physiologischen Psychologie_ 648 PERIODICALS 153-160; 325-328; 488-492; 651-658. APPENDIX. Plates belonging to the article “The Nervous Ganglia of Insects.” (In No. 1 of this volume.) VOL. III. OCTOBER, 1892. NO. 1. THE MONIST. MAN’S GLASSY ESSENCE. In _The Monist_ for January, 1891, I tried to show what conceptions ought to form the brick and mortar of a philosophical system. Chief among these was that of absolute chance for which I argued again in last April’s number.[1] In July, I applied another fundamental idea, that of continuity, to the law of mind. Next in order, I have to elucidate, from the point of view chosen, the relation between the psychical and physical aspects of a substance. The first step towards this ought, I think, to be the framing of a molecular theory of protoplasm. But before doing that, it seems indispensable to glance at the constitution of matter, in general. We shall, thus, unavoidably make a long detour; but, after all, our pains will not be wasted, for the problems of the papers that are to follow in the series will call for the consideration of the same question.