This is a very interesting paper and deserves careful study in the original. The author finds that affective tone, as measured by the psycho-galvanic reflex, may influence memory in two diametrically opposite directions: a word that evokes well marked affective tone may be recalled with either greater ease or greater difficulty than a less intensely toned word. 'Affective tone, [as thus measured] should therefore be regarded as of two kinds, one of which facilitates, while the other impedes, the remembering of words which it accompanies.' The reaction time in Jung's association experiment and the reproduction test in the same experiment measure the latter kind of affective tone only.