CHAPTER XXV. HOW WE HEAR, SEE, SMELL, TASTE, AND FEEL.--How
many senses have we? What is the ear? Name the three parts of the ear.
How do we hear? How should we treat the ear?

Name the principal parts of the eye? What are found in the eyeball? How
is the eyeball moved in the socket? How is the eye moistened? Of what
use is the lens of the eye? Of what use is the pupil of the eye? How may
we preserve the eyesight?

Where are the nerves of smell located? Of what use is the sense of
smell?

Where are the nerves of taste found? How is the sense of taste sometimes
injured or lost? What do we detect with the sense of taste? Of what use
to us is the sense of taste?

With what sense do we feel objects? In what parts of the body is this
sense most delicate? Upon what do all the special senses depend? Does
anything that injures the brain and nerves also injure the special
senses? What is the effect of alcohol and tobacco upon the sense of
sight? How is the hearing affected by tobacco-using? The sense of smell?
The sense of taste?

CHAPTER XXVI. ALCOHOL.--How is alcohol produced? In what
respect is alcohol like kerosene oil? Is alcohol a dangerous thing even
if we do not drink it? How can you prove that there is alcohol in wine,
beer, cider, and other fermented drinks? Can you tell by the odor of his
breath when a person has been drinking? Why? Does the breath ever take
fire? May alcohol be a cause? From what is brandy made? How are whiskey,