We know that, when people have consumption in their lungs, what they cough and spit out of their mouths and blow out of their noses (we call it _sputum_) has the germs, or seeds, of the disease in it. So, to keep other people from catching the disease, they must hold something before the face when they cough, and they must catch the sputum in paper (newspapers or paper napkins are very good for this) and burn it, for burning kills the germs. Then, too, they must not kiss other people on the mouth, and others must not kiss them. They must use their own drinking-cups, and never lend or borrow a cup. You see, you can look out for these things, yourselves. When grown people kiss you, just turn your cheek to them, instead of your mouth. Your cheek will not carry anything to your windpipe and lungs. And be sure to carry your own drinking-cup, or, better still, make the one for which you already have the pattern, every time you need one. [Illustration: HIS OWN CUP AND TOWEL] This sounds easy enough; and it is, too. But sometimes people don't know when they have this "plague," and of course they do not feel that they must be careful. What is to be done, then? If people won't take care of themselves, then the government has to make health laws to protect them, and the health officers have to see that the laws are obeyed. In many of the states and cities, laws have been made so that nobody is allowed to spit on the sidewalk or in the cars or in any other public place; and common drinking-cups are forbidden at all park fountains and at the water-coolers in schools and trains and stations and other public places. You ought to know about these things, because, as I have just said, other sicknesses, too, are carried about in the nose and mouth. _Grippe_, _pneumonia_ or lung fever, and what we call _colds_ are caught in exactly the same way. We used to think we caught them by being chilled; but we are much more likely to take them by being shut up in a hot, stuffy room with other people who already have them. Mother Nature never gave us such things in her beautiful, clean outdoors. We must wear clothes enough to keep us warm when we go out, and have bedclothes enough to keep us warm while we sleep; but we need not be afraid of catching any sickness from the clean outside air, either by day or by night. Drafts are not dangerous, except when our blood is already full of poisons and germs from foul air. Of course it is foolish even for strong, healthy people to run any risks that can be avoided, and there is one other thing that you should keep on the watch against doing; and that is, touching or kissing or playing with other children who may be sick. It is better not even to sit in the same room with them if you can avoid it.