discrete flow of time,282;long intervals conceived symbolically,283;we measure duration by events that succeed in it,283;variations in our estimations of its length,283;cerebral processes of,286Touch,60ff.;centre of, in cortex,116;images of,308Transcendental self or ego,196Transitive states of mind,160Translation, sense of,76Trapezium,85Turner, Dr. J. E.,440Tympanum,48Types of decision,429Unity of the passing thought,196Universal conceptions,240Urbantschitch,25Valve of Vieussens,80,86Variability of the emotions,381Varying concomitants, law of disassociation by,251Ventricles,79ff.Vierordt,71Vision,28ff.;binocular,33-9;of solidity,37Visual centre of cortex,110,115Visual imagination,302Visualizing power,302Vividness, determines association,264Volition, seeWillVolkmann,285Voluminousness, primitive, of sensations,335Voluntary acts, defined,92;voluntary attention,224;voluntary trains of thought,271Weber's law,17,24,46,59Weber's law—weight,66;pain,67Weight, sensibility to,66ff.Wernicke,109,113,115Wesley,223Wheatstone,347Wigan,300Will,Chapter XXVI;voluntary acts,415;they are secondary performances,415;no third kind of idea is called for,418;the motor-cue,420;ideo-motor action,432;action after deliberation,428;five types of decision,429;feeling of effort,434;healthiness of will,435;defects of,436;the explosive will: (1) from defective inhibition,437;(2) from exaggerated impulsion,439;the obstructed will,441;effort feels like an original force,442;pleasure and pain as springs of action,444;what holds attention determines action,448;will is a relation between the mind and its ideas,449;volitional effort is effort of attention,450;free-will,455;ethical importance of effort,458Willing terminates with the prevalence of the idea,449Wundt,11,18,25,58,122,123,125,127,220,281