Reference will be made in the chapter on the [Hygiene of Infancy] to the necessity of children sleeping as much as is possible. It will do no harm to say again here that nothing is so essential for the proper development of the body as sleep, and that it is absolutely a crime to awaken a child except under circumstances of absolute necessity.

Precautions in Respect to Eating.—A sufficient amount of sleep, and a proper quantity of digestible and nutritious food, thoroughly cooked and carefully masticated, are the things which above all others are most important for the maintenance of health. In the chapter on Foods, the nutritive values and digestibility of the various articles eaten by man will be discussed with sufficient thoroughness to instruct the reader as to a wholesome dietary; it is, therefore, not necessary here to go into the matter fully, but the subject is so important that a few general remarks will not be out of place.

Eating should never, so far as is possible, be hurried. Nothing is more important for the proper digestion of food than its thorough mastication, and this can only be accomplished when sufficient time is allowed for eating. It is not necessary that this be done to the extreme advocated by some, but it is certainly of the highest importance that the food be so thoroughly chewed that it is reduced to fine particles, and that it should be so soaked in saliva that it may be swallowed without the aid of liquids of any kind.

It is also desirable that food should not be taken while the individual is tired, so that it is a good plan where this condition exists for one to lie down for a short time before eating.

Regularity in eating is likewise of importance, it being best to take the meals at stated periods; the consumption of food at irregular hours often leads to indigestion and is a practice which should not be indulged in.

It is highly desirable to have food served under agreeable circumstances, digestion being accomplished in a much more satisfactory manner if pleasant conversation be indulged in during the meal, and if the food be of an appetizing character. Nothing is of more importance in connection with this subject than to have the food properly prepared. Not only is thorough cooking important from the standpoint of making foods digestible, but as is shown in another part of this volume, grave and sometimes fatal diseases are contracted by a neglect of this important procedure.

Fruits, contrary to what is generally thought, contain but little nourishment, and severely tax the digestive powers of those who have a tendency to dyspepsia. When eaten at all, they should be perfectly ripe and fresh, and should always be taken after meals rather than before.

Drinks,—Coffee, Tea, Milk, etc.—Much misconception exists, among people generally, and even among the medical profession, concerning the proper amount of water that should be drunk. While this substance is unquestionably the most wholesome of all drinks, there exists no necessity for taking it in great quantities at times when the system does not call for it. It would perhaps be a good rule for all to form the habit of drinking little while eating, the reason for which will be explained hereafter.

Coffee is exceedingly popular both on account of its delicious odor and taste when properly made, and for the reason that it is highly stimulating. While it is borne by young and vigorous persons of either sex with apparent impunity, there frequently comes a time in life when it can no longer be drunk without ill effects. As a general rule, dyspeptics do not bear it well.

Tea, if properly prepared, is a most palatable beverage, and one that is generally better borne than coffee. It is more wholesome when taken without lemon juice, and like coffee it is less disposed to produce trouble if largely diluted with milk, or if taken without cream or sugar.