Our baby was at this time in a way aware of the difference between companionship and solitude. In the latter days of the first month she would lie contentedly in the room with people near by, but would fret if left alone. But by the end of the month she was apt to fret when she was laid down on a chair or lounge, and to become content only when taken into the lap. This was not yet distinct memory and desire, but it showed that associations of pleasure had been formed with the lap, and that she felt a vague discomfort in the absence of these. Just before she was a month old came an advance in hearing. So far this sense had remained little more than a capacity for being startled or made restless by harsh sounds. I had tested it on the twenty-third day, and found that the baby scarcely noticed the sound of an ordinary call bell unless it was struck within about six inches of her ear, and suddenly and sharply at that; and on the twenty-sixth day she showed no sign of hearing single notes of the piano, struck close to her, from the highest to the lowest. But the next day, at the sound of chords, strongly struck, she hushed when fretting with hunger, and listened quietly for five minutes--her first pleasant experience through the sense of hearing. In the following days she would lie and take in the sound of the chords with a look of content, staring at the same time into the face of the person who held her, as if she associated the sound with that. Only a few days later, when she was a month old, I thought that her pleasure in companionship was increased if she was talked and crooned to; and it is likely that by this time, though she had not hitherto noticed voices, she was beginning to get them associated with the human face--probably to the enhancement of its charm. There were signs now, too, that touch sensations, in their principal seat, the lips, were becoming a source of pleasure. The first smile that I could conscientiously record occurred the day before the baby was a month old, and it was provoked by the touch of a finger on her lip; and a day or two later she smiled repeatedly at touches on her lip. The day before she was a month old, also, when her lips were brought up to the nipple, she laid hold upon it with them--the first seizing of any sort, for her hands were still in their original helplessness, waving vaguely about at the will of the nerve currents.