In early infancy, children who are not stuffed rather than fed, may occasionally be permitted to sleep on their backs, especially if they incline to do so. But it will be well to encourage them to sleep on one side, as soon as you can without great inconvenience.

The right side, as a general rule, is preferable; because the stomach, which lies towards the left side, is thus left uncompressed, and digestion undisturbed. I would not, however, require a child to lie always on the right side, but would occasionally change his position, lest he should become unable to sleep at all, except in a particular manner.

I have said elsewhere, that the head ought to be a little raised, especially if the child is liable to diseases of the brain. But this remark, rather hastily thrown out, requires explanation.

There is so much blood sent by the heart to the head and upper parts of the system of infants, as to predispose those parts, especially the brain, to disease. In a horizontal position of the body, there is more blood sent to the brain than when the body is erect. This will show the reader, at once, that if the infant is peculiarly exposed to diseases of the brain—and it certainly is so—he ought to remain in a horizontal posture as little as possible, except during sleep; and that even then it is desirable to make his bed in such a manner as to elevate the head and shoulders as much as we can without compressing the lungs, or obstructing the circulation in the neck.

I recommend, therefore, to raise the head of an infant's bedstead a little higher than the foot; though not so much as to incline him to slide downwards into the bed, for that would be to produce one evil in curing another.

Sir Charles Bell thinks that the common disease of infants called diabetes, arises from their being permitted to sleep on their backs; and that by breaking up the habit of lying in this position, and accustoming them to lie on their sides, we shall prevent it. I doubt whether the effect here referred to, is ever the result of such a cause. Still I am as much opposed to the habit of sleeping on the back, as Sir Charles Bell. It is quite injurious to free respiration.

Closely allied to the subject of bodily position in general, is the state of particular organs; especially the stomach and the senses. I have already intimated that in order to have an infant sleep quietly, it is desirable to darken the room. This is the more necessary, where infants are unnaturally wakeful. In such cases, not only light should be excluded from the eye, but sounds from the ear, odors from the nostrils, &c. A remarkably full stomach is in the way of going quietly to sleep, whether the person be old or young. Neither infants nor adults ought to take food for some time previous to their going to sleep for the night. Great bodily heat, as well as too great cold, is also unfavorable. If too hot, the temperature of the infant should be somewhat reduced by exposure to the air; if too cold, it should be raised in a natural, healthy, and appropriate manner.