Chapter IV: A DRINK OF WATER. 1. Why do we want to drink water? How would you

know that your body must have a great deal of liquid in it? 2. Do you know where the water you drink at school comes from? If you don't, try to find out; and find out also just how it is brought to the school and why it flows up to the faucets. 3. If you get drinking water from a well, either at home or at school, tell where this well is--how near the house or the out-buildings. Do you think that any waste from these buildings could drain into the well? Why? 4. At your sand table or from a sandpile in the yard, lay out a farmyard, showing where the house, the barn, the chicken yard, and the pig-sty, also the privy vault, are. Now locate the well so that it cannot receive drainage from any of these places. 5. What is the danger in using drinking water from a stream? 6. How could the germs of typhoid fever get into the milk we drink? 7. What do we mean by _fermented_ drinks? Name some. What is in these drinks that is so very harmful?