l kill grass and other plants, if poured upon them or
about their roots.

12. Mr. Darwin proved that the vapor of alcohol will kill plants; also
that plants become intoxicated by breathing the vapor of alcohol.

13. Alcohol, even in small quantities, hinders digestion.

14. Alcohol causes the body to lose heat so rapidly that it becomes
cooler instead of warmer.

15. The danger of freezing to death when exposed to extreme cold is
greatly increased by taking alcohol.

16. Stanley, and other African explorers, say that it is dangerous to
use alcoholic drinks in hot climates.

17. In very hot weather, persons who use alcoholic drinks are more
subject to sunstroke than those who do not.

18. Beefsteak soaked in alcohol becomes tough like leather. An egg
placed in alcohol is hardened as though it had been boiled.

19. The effect of alcohol upon the brain, nerves, and other tissues of
the body is much the same as upon the beefsteak and the egg.

QUESTIONS FOR REVIEW.

CHAPTER I. THE HOUSE WE LIVE IN.--What is the body like? Does
the body resemble anything else besides a house? How is it like a
machine? Name the different parts of the body. What is anatomy?
physiology? hygiene?

CHAPTER II. A GENERAL VIEW OF THE BODY.--What are the main
parts of the body? Name the different parts of the head; of the trunk;
of each arm; of each leg. What covers the body?

CHAPTER III. THE INSIDE OF THE BODY.--What is the name of the
framework of the body? What is the skull? How is the back-bone formed?
Name the two cavities of the trunk. What does the chest contain? the
abdomen?

CHAPTER IV. OUR FOODS.--Of what are our bodies made? What are
foods? Where do we get our foods? Name some animal foods; some vegetable
foods. What are poisons?

CHAPTER V. UNHEALTHFUL FOODS.--Is the flesh of diseased animals
good for food? What can you say about unripe, stale, or mouldy foods?
What is adulteration of foods? What foods are most likely to be
adulterated? Are pepper, mustard, and other condiments proper foods?
What about tobacco? What is the effect of tobacco upon boys?

CHAPTER VI. OUR DRINKS.--What is the only thing that will
satisfy thirst? Why do we need water? How does water sometimes become
impure? What is the effect of using impure water? What are the
properties of good water? Are tea and coffee good drinks? How is alcohol
made? Give familiar examples of fermentation. How are pure alcohol and
strong liquors made? Is alco