The eighth pair?—­“To the inner ear.”

What are the eighth pair called?—­“The nerves of hearing.”

Where do the ninth pair go?—­“To the mouth, tongue, and throat.”

Where do the twelfth pair go?—­“To the tongue.”

Where do the eleventh pair go?—­“To the neck.”

Where do the tenth pair go?—­“To the neck, throat, lungs, stomach, and different parts of the body.”

What happens if a nerve be destroyed?—­“It cannot carry messages to the brain.”

What happens if a nerve be pressed upon too long?—­“It cannot carry messages to the brain.”

What is necessary if you would have a strong, healthy brain?—­“My brain must be used; my brain must be rested; my brain must be supplied with pure blood.”

How must you use your brain?—­“In thinking and studying.”

How may the brain be rested?—­“By sleep.”

In what other way may the brain be rested?—­“By thinking of something different from that which made it tired.”

What two brain-poisons have you learned about?—­“Alcohol and tobacco."[4]

With what may you show the harm done by alcohol to the gray part of the brain?—­“With alcohol and the white of an egg.”

How could you show it with these?—­“I would pour the alcohol upon the white of the egg.”

What would then happen?—­“The white of the egg would harden as if it had been boiled.”

What is in the white of an egg?—­“Water and albumen.”

Where else may we find albumen?—­“In some seeds, and in the gray part of the brain and the nerves.”

What harm does alcohol do to the nerves?—­“It takes away their moisture and hardens them.”

What harm does this do to them?—­“It paralyzes them, or makes them lose their power.”

What happens when nerves are paralyzed?—­“They lose their power over the muscles; they are unfit to carry messages to and from the brain.”

What harm does alcohol do to the gray part of the brain?—­“It hardens it, as it hardens the white of an egg.”

What harm does this do to the brain?—­“It paralyzes it, or makes it lose its power.”

What then happens?—­“It cannot properly do its work of thinking, and cannot control the nerves.”

What disease is sometimes caused by this hardening of the brain by alcohol?—­“Paralysis, which often ends in death.”

What harm does alcohol do to the blood-vessels of the brain?—­“It fills them with impure blood.”

What disease is caused by the blood-vessels of the brain being filled with impure blood?—­“Congestion of the brain, or apoplexy, which ends in death.”

What else frequently happens to those who drink alcoholic liquors?—­“They become crazy, or insane.”

If you wish to have a strong, healthy brain, what should you do about these liquors?—­

  “Never put them into my mouth,
  To steal away my brains.”