, with its apex pointing downward to my left side. It beats about
seventy times a minute, sending out about two ounces of blood at every
beat.

2. The blood when pure is of a bright red color; it is a liquid made from
food and drink.

3. It passes from my heart to all parts of my body, through pipes called
arteries; these arteries spread out through the body like branches from a
tree.

4. As the blood flows from the heart, through the arteries, it gives
nourishment to every part of the body, and carries away the impurities it
meets, which makes it black and thick; when it comes through the veins,
back to the heart, it is not fit to be used, so it goes to the lungs to be
purified by the fresh air; then it returns to the heart to be sent again
throughout the body; this happens once in from three to eight minutes, and
is called the circulation of the blood.

7. If I would be healthy,
my blood must be pure and circulate freely all the time.

8. It will not circulate freely,
if I wear tight clothing,
if I do not exercise in work or play,
if I do not keep my body warm.

9. It will be impure,
if I breathe bad air,
if I eat unwholesome food,
if I drink alcoholic liquors,
if I snuff, smoke, or chew tobacco.

* * * * *

QUESTIONS FOR THE FORMULA.

1. Tell about the heart and where it is placed.

2. Tell about the blood and of what it is made.

3. Where does the good blood pass after it is sent out from the heart?

4. Tell what the blood does as it flows through the body.

5. What is this flowing of the blood to and from the heart called?

6. How often does it happen?

7. What is necessary if you would have pure blood?

8. When will the blood not circulate freely?

9. When will the blood be impure?

* * * * *

HOW TO TREAT A WOUND.

If it is only a flesh-wound or slight cut, wash it with cold water and
bandage it with a clean, white rag. The edges of a deep cut should be drawn
together and held in place by narrow strips of adhesive plaster, fastened
across the wound from side to side.

If the cut is very deep, and the blood flows very freely, send for a
doctor. While you wait for him, knot a handkerchief, or suspender, or
towel, in the middle, and twist it very tightly _over the cut artery, above
the wound_. If a vein has been severed, twist the knotted handkerchief
_below the wound_. If the blood continues