"
What do the lungs do with the alcohol?--"They drive it out as soon as they
can."
Where do the lungs send some of it?--"Through the nose and mouth, into the
air."
What harm does the alcohol do in the breath?--"It poisons the air; it tells
that some kind of alcoholic liquor has been taken into the stomach."
From what you have learned about alcohol, what do you think is the only
safe rule to obey concerning cider, beer, wine, and all alcoholic
liquors?--"I must not drink them, if I wish to have a strong and healthy
stomach."
* * * * *
[Illustration: THE NERVOUS SYSTEM.--(From Walker's _Physiology_.)]
1. The large brain. 2. The small brain. 3. The spinal cord. 4, 5. Nerves.
* * * * *
PART XI.
FORMULA FOR THE LESSON ON THE NERVOUS SYSTEM.
1. My brain is a soft gray-and-white mass resembling marrow.
2. It is placed in a bony box called the skull; it is covered and held
together by three coats or membranes.
3. The outer membrane is thick and firm; it strengthens and supports the
brain.
4. The middle membrane is thick, and somewhat like a spider's web in
appearance.
5. The inner membrane is a network of blood-vessels.
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