In the latter half of the month, she went a good deal farther toward getting a roughly complete knowledge and control of her body. She investigated her ear, her cheek, and the back and sides of her head, from time to time. She became quite expert in using legs and hands, head and mouth, together, in get getting hold of her toe. She sat alone longer and longer, and by the end of the month could have done so by the half hour, if she had not always upset herself in five minutes or so by turning and reaching about. She had become very free in bending, squirming, and changing her position when she lay on the floor, and early in the third week of the month she had turned clear over, from back to stomach, in reaching after something. She followed up the lesson at once, and soon was rolling over whenever she wished--at first having much ado to get her arm disentangled from under her, but managing it nicely before long. It is possible she would have begun creep creeping at this time but for the impediment of her clothes. She did stumble once upon almost the right movement, in trying to get forward to something she wanted; but her feet and knees became entangled in her skirts, and she gave it up. A week later, she was put into short skirts, but by that time the ability to roll over had diverted her mind from creeping. Babies must lose a great deal of their normal activity through clothes. They are retracing a stage of human history in which clothes had no part, and this new element must hamper the repetition immensely. Clothes they must wear--they do not live in tropic forests nor own hair coverings; but we ought to leave the little limbs as free as we can without risk from cold. A chance to roll about nude in a room that is safely warm is a great thing for a baby. She did not again use any sign language as advanced as when she had asked to be put on the table; that incident was a sort of herald of a later stage of development. But in the latter part of the month her regular means of communication were decidedly better developed than in the first part. She would coax for a frolic by leaning forward with an urgent “Oo! oo!” and expressive movements of her body; but if she was asking instead for an object she wished, or to be taken into her mother’s arms, there were small but quite definite differences in tone, expression, and movement, so that we usually knew at once which she meant.