in a while, his face becomes red
after each drink, and an hour or two later the effect of the alcohol
passes off. The blood tubes have squeezed up to their natural size.

=Alcohol and the Kidneys.=--Taking several glasses daily of even such
weak alcoholic drink as beer often causes the kidneys to become sick.
Some of their working parts become changed to fat and some parts
become hard. The cells which let the waste matter pass out of the
blood get hurt by the poison of the alcohol so that they let some of
the food also pass out of the blood.

PRACTICAL QUESTIONS

1. Name the two parts of the skin.

2. Give the three uses of the skin.

3. What is a sweat gland?

4. How much sweat is formed daily?

5. Of what use is the sweat?

6. How should the nails be cared for?

7. Tell what care should be given the hair.

8. Why should you not use another person's hair brush?

9. Why should the skin be washed often?

10. Of what use is a cold bath?

11. Why should the hands be well washed before handling
food?

12. Why does the drunkard have a red nose?

CHAPTER XIII

CLOTHING AND HOW TO USE IT

=Kinds of Clothing.=--People are beginning to learn that the wearing
of the right kind of clothing has much to do with keeping them well.
Many persons wear too heavy clothing in winter. Keeping the body too
hot makes it weak.

Some kinds of clothing are much warmer than others. Some are expensive
and others are cheap. Cheap clothes will often serve the same purpose
as the more costly ones. If you look at your handkerchief or
stockings, you will see that they are made of threads running
crosswise to each other. All clothing is made from threads. Some of
these are wool, some are linen, a few are silk, and many are cotton.

=Woolen Clothing.=--Woolen clothing, such as overcoats and fine cloth
dresses and suits, is made from the wool cut from sheep. Enough wool
can be sheared from two sheep in one year to make an entire suit of
clothes. The raw wool is first twisted into threads and then woven by
machines into cloth.

[Illustration: FIG. 50.--At the left is a bunch of flax gathered from
the field, and on the right is a spool of thread made from the flax
and ready to be woven into linen.]

=Linen.=--Linen is used in making collars, cuffs, and handkerchiefs.
It is made from fine threads taken from the flax plant. On a piece of
ground as large as