I have spoken several times of the ease with which even we grown people lose our sense of personal identity; and changes in brain circulation make such confusions especially likely at first waking from sleep. With babies, whose feeling of identity is but insecurely established, this must be much more common; moreover, a baby’s conditions of breathing are less regular than ours, and it is probable that as he comes out of sleep, and the circulation and respiration of the waking hours slowly reestablish themselves, he has all sorts of queer, lost feelings. I was pretty sure, from our baby’s behavior I in the next two years, that she struggled back to the firm shores of waking consciousness through dark waters of confusion, and needed a friendly hand to cling to. This, I suspect, is the secret of the wild crying in the night, which doctors call “night terror”: it is not terror, I think, but vague distress, increased by the darkness--loss of self, of direction, of all one’s usual bodily feeling. In these sensitive states attending sleep it is likely that some of the emotional conditions for life are formed, and the ties between mother and child knit firmest. My observation is that the one the baby loves most is the one that sleeps close by, that bends over him as he struggles confusedly back to waking, and steers him tenderly through the valley of the shadow of sleep; and next, the one that plays most patiently and observantly with him--not the one that feeds him. In her absorption in her growing bodily activity, the baby had taken no marked steps in intellectual development, though in skill of handling, and in ability to understand what went on about her and put two and two together, she made steady progress. Early in the eighth month, some definite instances of this appeared. She showed a discreet preference at bedtime for anybody rather than her mother, and clung vigorously round my neck or her grandfather’s when that messenger of fate came for her. She dropped things to watch them fall, with a persistent zeal and interest such as she had not shown in earlier experiments of the sort. She knew what it meant if one of us put a hat on, and pleaded with outstretched hands and springing motion to go too. Once she found that in moving a long stick she was moving some twigs at its farther end, and kept up the experiment with curiosity.