minutes, according as the heart beats fast or slowly."

What kind of blood is necessary to health?--"Pure blood."

How should the blood circulate?--"Freely, all the time."

What do you mean by freely?--"Without anything to hinder."

What is necessary for the free circulation of the blood?--"I must wear
clean clothing; I must exercise in work or play; I must keep my body warm."

How does tight clothing hinder the free circulation of the blood?--"By
pressing upon the arteries and veins; and when about the waist, causing the
ribs and other parts of the body to press upon the heart."

How does exercise help the free circulation of the blood?--"Exercise makes
the heart beat faster, which causes the blood to more faster through the
arteries and veins."

Why does keeping the body warm help the circulation of the blood?--"Because
the blood moves faster when it is warmest; cold chills the blood, and makes
it move slowly."

What harm do alcoholic liquors do to the heart?--"They make it tired, and
sometimes wear it out."

In what way do they make it tired?--"They make it beat too fast."

Why does it beat too fast?--"Because it is hurrying to drive the alcohol
out of the body."