The age at which he ought to commence taking exercise will, of course, depend upon the season and upon the weather. If it be summer, and the weather be fine, he should he carried in the open air, a week or a fortnight after birth, but if it be winter, he ought not on any account to be taken out under the month, and not even then, unless the weather be mild for the season, and it be the middle of the day. At the end of two months he should breathe the open air more frequently. And after the expiration of three months, he ought to be carried out _every day_, even if it be wet under foot, provided it be fine above, and the wind be neither in an easterly nor in a north-easterly direction. By doing so we shall make him strong and hearty, and give the skin that mottled appearance which is so characteristic of health. He must, of course, be well clothed. I cannot help expressing my disapprobation of the practice of smothering up an infant's face with a handkerchief, with a veil or with any other covering, when he is taken out into the air. If his face be so muffled up, he may as well remain at home, as under such circumstances, it is impossible for him to receive any benefit from the invigorating effects of the fresh air. 75. _Can you devise any method to induce a babe himself to take exercise_? He must be encouraged to use muscular exertion, and, for this purpose, he ought to be frequently laid either upon a rug, or carpet, or the floor. He will then stretch his limbs and kick about with perfect glee. It is a pretty sight, to see a little fellow kicking and sprawling on the floor. He crows with delight and thoroughly enjoys himself. It strengthens his back, it enables him to stretch his limbs, and to use his muscles, and is one of the best kinds of exercise a very young child can take. While going through his performances his diaper, if he wear one, should be unfastened, in order that he might go through his exercises untrammelled. By adopting the above plan, the babe quietly enjoys himself--his brain is not over excited by it; this is an important consideration, for both mothers and nurses are apt to rouse, and excite very young children to their manifest detriment. A babe requires rest, and not excitement. How wrong it is, then, for either a mother or a nurse to be exciting and rousing a new born babe. It is most injurious and weakening to his brain. In the early period of his existence his time ought to be almost entirely spent in sleeping and in sucking! 76. _Do you approve of tossing an infant much about_?