Observation, as scientific method, [19], [331];

formula of, [19], [22], [80];

difficulties of, [20];

and experiment, [22] f.

Of-course, feeling of, [181] f.

Organic changes, in sense-feeling, [82] ff.;

in secondary attention, [105] f.;

in emotion, [219] ff.

Organic sensations, [64] f.;

their part in emotion, [65], [216], [218] ff., [290];