1. How much of the body will muscular exercise develop? 2. Why should exercise and play be in the open air? 3. What is fatigue and what does it mean? 4. Name some games that are good exercise for the body and tell why they are so. 5. Why do marching and singing and drawing alternating with your other lessons, help you to grow? 6. Is playing a waste of time? Why? 7. How much exercise a day does a grown man or woman need? 8. How should this exercise be taken? 9. What senses and powers does base-ball develop? 10. In what respects is your progress in school work like your progress in learning to play games well? 11. What are good games for girls? 12. Why have we less sickness in summer than in winter? 13. Why is gardening a valuable occupation? 14. When should we do our hardest studying? 15. What is the best and most successful way to study? 16. How can you make school work as enjoyable as play? 17. What are your duties to-day? Plan the best way to do them so that you can also take exercise and rest and time for meals. Write this plan in the form of a day's programme. CHAPTER XXIII 1. What is the "Lookout Department" of the body, and how is the work of this department distributed among the members? 2. Describe the inside structure of the nose. 3. In what sense is the nose like a radiator? 4. What are the cilia for? 5. How does the nose dispose of dust and lint? 6. What causes catarrh and colds? 7. Where is the sense of smell located? 8. When you have a cold, why do you often lose your sense of smell? of taste? 9. How do you tell the difference in flavor between an apple and an onion? 10. What does the tongue do? 11. What are the only tastes perceived in the mouth? 12. What does a coated tongue mean? 13. Is the sense of taste a safe guide in choosing foods? Why? 14. What are adenoids? What trouble do they cause? How can they be cured? 15. How does the eye help to choose food? 16. Name and describe the parts of the face around the eye. 17. Of what use is each? 18. How does the tear gland act? 19. What is the retina? the pupil? the iris? What is each for? 20. What do we mean by bringing the rays of light to a focus? How can you illustrate this by a burning glass? 21. When do eyes need glasses? 22. How can the eye change the form of its lens for near and for far sight? What is this action called? 23. Why do children born deaf become dumb? 24. Where do we find the key-board of hearing? Why do we call it the cochlea? 25. Draw a picture showing the position of the drum, "hammer," "anvil," "stirrup," and cochlea. 26. What has happened in your inner ear when something in your ear goes "pop"? 27. Why does a cold sometimes make you deaf? 28. Why do we have wax in the outer ear? What is the German proverb about cleaning the ear? 29. What is our "sixth sense"? Where do we find its organ located? What is it like? CHAPTER XXIV