_Hu._ D^{1-4} 6 8 3 7 9 10 4 9 D^{5-8} 7 9 0 2 9 10 2 7 D^{9-12} 7 9 4 6 8 10 1 8 Av. 20 26 7 15 26 30 7 24 _Ho._ D^{1-4} 9 9 3 3 10 9 5 7 D^{5-8} 9 8 1 6 9 9 6¹ 8¹ D^{9-12} 8 8 5 5 10 10 6¹ 7¹ Av. 26 25 9 14 29 28 17 22 ¹ One day. The results of the _D_ set strongly confirm the results of the _A_, _B_, and _C_ sets. Table VII. shows that after from one to two days' interval four subjects recall objects better than nouns and movements better than verbs. One subject, _M._, shows no preference. CONCLUSIONS. We are now in a position to answer specifically the problem of this investigation. The results show: (1) that those five subjects who recall objects better than nouns (involving images) _when each occurs alone_, also recall objects better than nouns when each is recalled by means of an unfamiliar verbal symbol with which it has been coupled; (2) that the same is true of verbs and movements; (3) that these facts also receive confirmation on the negative side, viz.: the one subject who does not recall objects and movements better than nouns and verbs (involving images) _when they are used alone_, also does not recall them better _when they are recalled by means of foreign symbols_ with which they have been coupled. MINOR QUESTIONS. The problem proposed at the outset of the investigation having been answered, two minor questions remain: (1) as to images, (2) indirect associations. 1. All the subjects were good visualizers. The images became clear usually during the first of the three presentations, _i.e._, in 1-3 secs., and persisted until the next couplet appeared. In the second and third presentations the same images recurred, rarely a new one appeared.