what is their
purpose? How does the hair grow? Name the different uses of the skin?

CHAPTER XVI. HOW TO TAKE CARE OF THE SKIN.--What happened to
the little boy who was covered with gold leaf? Why did he die? What is
the effect of neglecting to keep the skin clean? What is the effect of
wearing too much clothing and living in rooms which are too warm? How
should the hair be cared for? the nails? What is the effect of alcohol,
tobacco, and other narcotics upon the skin?

CHAPTER XVII. THE KIDNEYS AND THEIR WORK.--What is the work of
the kidneys? How may we keep these organs healthy? What is the effect of
alcohol upon the kidneys?

CHAPTER XVIII. OUR BONES AND THEIR USES.--How many bones in the
body? What are the bones called when taken all together? Name the
principal parts of the skeleton. Name the bones of the trunk, of the
arms, of the legs. What are the uses of the bones? What is a joint? What
is cartilage? By what are the bones held together? Of what are the bones
largely composed?

CHAPTER XIX. HOW TO KEEP THE BONES HEALTHY.--What sort of
bread is best for the bones? Why? If a child tries to walk too early why
are its legs likely to become crooked? What are the effects of sitting
or lying in bad positions? Of wearing tight or poorly-fitting clothing?
Of tight or high-heeled shoes? What injuries are likely to happen to the
bones and joints by accident or rough play?

CHAPTER XX. THE MUSCLES AND HOW WE USE THEM.--How many muscles
in the body? Of what are the muscles composed? How are many of the
muscles connected to the bones? To what are all bodily movements due?
How do the muscles act? What causes the muscles to act? Do all muscles
act only when we will to have them act?

CHAPTER XXI. HOW TO KEEP THE MUSCLES HEALTHY.--What makes the
right arm of the blacksmith stronger than the left one? How should
exercise be taken? Mention some things in relation to the use of the
muscles which we ought not to do, and state the reasons why. What is the
effect of alcohol upon the muscles? of tobacco? of tea and coffee?

CHAPTER XXII. HOW WE FEEL AND THINK.--With what part of the
body do we think? How many brains does a man have? How is each brain
divided? Of what is the brain largely composed? Where do the nerves
begin? What is the spinal cord? Why does it cause pain to prick the
finger? How many kinds of nerves are there? (_Ans._ Two; nerves of
feeling and nerves of work.) Name some of the different kinds of nerves
of f