An hour or two after a hearty meal, you may feel a slight degree of thirst. This is caused by the digestion going on in the stomach. If you drink, you will soon be thirsty again and will be forced to drink often through the day; but, if you refrain, at first, the thirst will soon depart and will not return for hours. During warm weather, or when perspiring from exercise, you need more water than at other times. Even if very cold, it will do no harm, if slowly sipped. Many people learn to like warm water, which is more healthful than cold. LEMONADE, ROOT BEER, SODA WATER, ETC. Pure soda water, lemonade, root beer and similar drinks are not hurtful, but the sugar they contain increases our thirst and leads us to drink more than is good for us. Water is the provision of nature, and though it has no color, taste or smell, nothing in the world is so delicious and refreshing. Very hot and very cold drinks are hurtful, but much of the ill effects may be averted by sipping them as I have already advised. Few will believe until they make the test, how little water is needed through the day. The less we take the more comfortable will we feel. * * * * * How are many diseases caused? What, therefore, is important? What have you to say about tea, coffee, and chocolate? What of a temperate use of those and of temperance drinks? Of milk? What have you to say of the habit of drinking while eating? What does nearly every one do? What is the best way to drink water? What should be done when slightly thirsty an hour or two after a meal? When do you need more water than at other times? In what manner may very cold water be drunk without harm? What of warm water? What is said of soda water, lemonade, etc.? What of water? What of very hot and cold drinks? What will be the effect if we drink only a small quantity of water? CHAPTER IV. EATING. Always eat slowly and do not swallow your food until it is chewed to a pulp. The glands inside the mouth give out enough saliva to moisten the food and fit it for digestion in the stomach. Children love to soak their bread in coffee, or to sip the coffee while eating. By doing so they stop the flow of saliva and weaken a fluid which digests the food in the stomach. WHAT BOYS AND GIRLS SHOULD EAT. In the way of food, bread and butter, well cooked meat, and fruits not too green nor over ripe, should form your principal diet. Pies and cakes are injurious, and if you eat them, do so sparingly. Never ask for a second piece. [Illustration: THE STOMACH AND INTESTINES.]