help your throat and your lungs? How else may it help you? 4. Draw a
picture to show how air reaches the lungs. 5. What are _adenoids_? How
may you know if you have adenoids? If you have, what ought you to do?
Why? 6. Where do the men who want to smoke in the open trolley car
have to sit? Why? If children breathe tobacco smoke, what effect will
it have on them? Why is smoking a foolish habit? How is it often
harmful?

VII. TALKING AND RECITING. 1. When you are reciting in class, do you
think how your voice and the words sound to the other people in the
room? Show the class how you can make your speech sound just as you
want it to. 2. Give three ways in which you can take care of your
throat and voice. Put your hand on the place where your voice is made.
How is it made? 3. On your own picture of the throat, show where those
little folds of skin are (the picture on p. 86 shows, of course, only
the fold of skin, or _vocal cord_, on the right half of the windpipe).

VIII. THINKING AND ANSWERING. 1. With two or three of your classmates,
play telephone;--one must be "Central" and one "Information" at the
central office, and one must receive your message and answer it. A
number of the other children may join hands to make a long "wire" on
each side of "Central"; they will repeat the message softly from one
to another all down their "wire." 2. Now, suppose that you all
represent the telephone system in the body. Could you act out this
"Body-Telephone" call:--The eye sees a burning match on the floor, and
sends the message to its center in the brain; this center consults the
memory ("Information") as to what to do. Memory recalls that burning
matches are likely to set fire to other things and ought to be put
out. So the brain sends a message to the muscles of the foot to get to
work and stamp out the flame. In this play, what will you each call