Fig. 10 —Bird's-eye view of Plymouth, Pennsylvania, showing where the waste from one sick room was thrown on the bank of a stream which several miles below supplied the town with water and caused over one thousand cases of fever and more than a hundred deaths within seven weeks.

Beer and Wine as Foods.—It was once thought that beer and wine were good foods, but hundreds of late experiments show that these drinks are very poor and expensive foods. A half glass of milk is of more use to the body as a food than a full quart of beer. The use of much wine or beer may seem to satisfy the appetite because they deaden the real feeling of hunger. Neither of these drinks can be used by the young without danger of doing much harm.

Fig. 11 —The little glass of milk contains nearly twice as much food for building flesh and blood as the large glass of beer.

PRACTICAL QUESTIONS

1. Why does the body need food?
2. Why do you weigh less after working?
3. What is oxygen?
4. From what do we get body-building foods?
5. In what is starch found?
6. How much water does the body need?
7. Where have people been made sick by using bad water?
8. How can we prevent sickness from bad water?
9. What harm does overeating do?
10. What can you say of beer as a food?