332 HELPS IN LESSON PREPARATION 



conclusions that are stated on page 181. 10. What did 

 Commander Peary say about taking on his Polar expeditions 

 men who were dependent on tobacco ? 



CHAPTER XIX 



1. Tell what is said about the amount of water in the 

 human body. 2. Why must the body frequently receive 

 a new supply of water? State how this need is supplied. 

 3. Explain what is meant by taking into solution. 4. Tell 

 how water is helpful in cleaning the inside of the body. 

 5. How may drinking water with one's meals be harm- 

 ful? 6. Mention times of the day that are favorable 

 for drinking freely of water. 7. What is said about the 

 temperature of water? 8. Tell why drinking freely of 

 water to help cleanse our bodies is usually much wiser 

 than taking patent medicines. 9. Why should the habit 

 of dosing with medicines of any kind be avoided? 

 10. What is distilled water? 11. Explain what causes 

 rain. 12. How does rain differ from distilled water? 



13. Tell about the formation of wells and springs. 



14. Why does the housewife prefer soft water for wash- 

 ing? 15. Give the meaning of polluted and sewage, page 

 190. 16. How may water that is suspected of being 

 polluted be made safe to drink? 17. State a good reason 

 for being careful about the quality of our drinking water. 

 18. Tell what is said about the Japanese. 19. What 

 is the safest way to cool water for drinking, and why? 

 20. Tell why a pump is better than a well. 21. Of 

 what use is the epidermis? The dermis or true skin? 

 22. State why the perspiratory glands are like the sewer 

 pipes of a house. 23. Besides furnishing an outlet for 

 perspiration, what other useful service do the perspira- 

 tory glands serve? 24. Tell the use of the oil glands. 

 How may they obstruct the skin? 25. Show how the 



