of tastes, [49];

of smells, [49];

of taste, touch and smell, [48], [159];

of tones, [54], [122], [159];

of organic sensations, [64], [159];

of feeling and sensation, [81], [90], [319];

hypothetical, of vision and kinæsthesis, in space-perception, [129];

a mode of connection of mental processes, [159], [168];

and synergy of brain-processes, [160].