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 alcohol a food? Why do you think it is a poison?
Do you think moderate drinking is healthful?

CHAPTER VII. HOW WE DIGEST.--What is digestion? What is the
digestive tube? Name the different digestive organs. How many sets of
teeth has a person in his lifetime? How many teeth in each set? How many
pairs of salivary glands? What do they form? What is the gullet?
Describe the stomach. What is the gastric juice? How long is the
intestinal canal? What fluid is formed in the intestines? Where is the
liver found, and how large is it? What does the liver produce? What is
the gall-bladder, and what is its use? What does the liver do besides
producing bile? What and where is the pancreas? What does the pancreas
do? Where is the spleen? How many important organs of digestion are
there? How many digestive fluids?

CHAPTER VIII. DIGESTION OF A MOUTHFUL OF BREAD.--Name the
different processes of digestion [mastication, action of saliva,
swallowing, action of stomach and gastric juice, action of bile, action
of pancreatic juice, action of intestines and intestinal juice,
absorption, liver digestion]. Describe the digestion of a mouthful of
bread. Where is the food taken after it has been absorbed? What are the
lacteals? What is the thoracic duct?

CHAPTER IX. BAD HABITS IN EATING.--What is indigestion? Mention
some of the causes of indigestion. How does eating too fast cause
indigestion? Eating too much? too frequently? Irregularly? when tired?