in attention, [101] f.;

as vehicle of meaning, [119] f., [140];

in visual perception of distance, [127] ff.;

empathic, in optical illusion, [137] f.;

imitative, in memory, [190] ff., [200];

empathic, in imagination, [198];

in motor reaction, [241];

in expectation, [273].

Knowledge, problem of, foreign to psychology, [324] ff.

Language, serves practical needs, [36], [313], [321];