CHAPTER XXI. 1. Describe the Arches of the Feet and Tell What They Are for.

1. Describe the arches of the feet and tell what they are for. 2. Describe the kind of shoe you ought to wear. 3. Do you grow while asleep? 4. How much sleep do you need? 5. Are there many diseases of the muscles and bones? 6. How does nature repair a broken bone? 7. What causes most of the diseases of bones? 8. What is a slouching gait due to? 9. What is the cause of headache? 10. How should headache be regarded and treated? 11. What are the dangers of taking patent or unknown medicines? 12. What do most patent medicines contain? 13. Are the nerves resistant to disease, or specially subject to its attack? 14. What causes many of the diseases of the nerves? 15. Name some poisons that injure the nerves. 16. How may diphtheria affect the nerves? 17. What does alcohol do to the nervous system? 18. Does our modern method of life tend to cause or to cure nervous diseases and insanity? Why?