in perception, [114] f., [117], [121], [131], [165], [167];

in idea, [116] f., [121], [165], [167];

situational, [166] ff.

Contiguity, ‘law’ of association by, [147], [168] f.

Contrast, visual, [61];

olfactory, [63].

Convergence, sensations of, [127];

convergence of associative tendencies, [158] f., [162], [197], [199].

Correlation, of brain and mind, [10] ff., [17];

studied by psychology, [17] f., [113], [231];