In the cuts on the following page, the heavy line represents the first memory, the broken the second, and the dotted the third. Age at the time of reporting is represented in distance to the right, and the age of the person at the time of the occurrence remembered is represented by the distance upward. "There is a rise in all the curves at adolescence. This shows that, from the age of twelve to fifteen, boys do not recall so early memories as they do both before and after this period." This Colegrove ascribes to the fact that the present seems so large and rich. At any rate, "the earliest memories of boys at the age of fourteen average almost four years." His curves for girls show that the age of all the first three memories which they are able to recall is higher at fourteen than at any period before or after; that at seven and eight the average age of the first things recalled is nearly a year earlier than it is at fourteen. This means that at puberty there is a marked and characteristic obliteration of infantile memories which lapse to oblivion with augmented absorption in the present. [Illustration: Untitled Graph.] It was found that males have the greatest number of memories for protracted or repeated occurrences, for people, and clothing, topographical and logical matters; that females have better memories for novel occurrences or single impressions. Already at ten and eleven motor memories begin to decrease for females and increase for males. At fourteen and fifteen, motor memories nearly culminate for males, but still further decline for females. The former show a marked decrease in memory for relatives and playmates and an increase for other persons. Sickness and accidents to self are remembered less by males and better by females, as are memories of fears. At eighteen and nineteen there is a marked and continued increase in the visual memories of each sex and the auditory memory of females. Memory for the activity of others increases for both, but far more strongly for males. Colegrove concludes from his data that "the period of adolescence is one of great psychical awaking. A wide range of memories is found at this time. From the fourteenth year with girls and the fifteenth with boys the auditory memories are strongly developed. At the dawn of adolescence the motor memory of voice nearly culminates, and they have fewer memories of sickness and accidents to self. During this time the memory of other persons and the activity of others is emphasized in case of both boys and girls. In general, at this period the special sensory memories are numerous, and it is the golden age for motor memories. Now, too, the memories of high ideals, self-sacrifice, and self-forgetfulness are cherished. Wider interests than self and immediate friends become the objects of reflection and recollection."