the brain an account of every thing
we see.

We might say the eye is taking pictures for us all day long, and that
the nerve of sight is describing these pictures to the brain.

CARE OF THE EYES.

The nerves of sight need great care, for they are very delicate.

Do not face a bright light when you are reading or studying. While
writing, you should sit so that the light will come from the left side;
then the shadow of your hand will not fall upon your work.

One or two true stories may help you to remember that you must take good
care of your eyes.

The nerve of sight can not bear too bright a light. It asks to have the
pupil made small, and even the eyelid curtains put down, when the light
is too strong.

Once, there was a boy who said boastfully to his playmates: "Let us see
which of us can look straight at the sun for the longest time."

Then they foolishly began to look at the sun. The delicate nerves of
sight felt a sharp pain, and begged to have the pupils made as small as
possible and the eyelid curtains put down.

But the foolish boys said "No." They were trying to see which would bear
it the longest. Great harm was done to the brains as well as eyes of
both these boys. The one who looked longest at the sun died in
consequence of his foolish act.

The second story is about a little boy who tried to turn his eyes to
imitate a schoolmate who was cross-eyed. He turned them; but he could
not turn them back again. Although he is now a gentleman more than fifty
years old and has had much painful work done upon his eyes, the doctors
have never been able to set them quite right.

You see from the first story, that you must be careful not to give your
eyes too much light. But you must also be sure to give them light
enough.

When one tries to read in the twilight, the little nerve of sight says:
"Give me more light; I am hurt, by trying to see in the dark."

If you should kill these delicate nerves, no others would ever grow in
place of them, and you would never be able to see again.

THE EARS.

What you call your ears are only pieces of gristle, so curved as to
catch the sounds and pass them along to the true ears. These are deeper
in the head, where the nerve of hearing is waiting to send an account
of each sound to the brain.

CARE OF THE EARS.

The ear nerve is in less danger than that of the eye. Careless children
sometimes put pins into their ears and so break the "drum." That is a
very