HELPS IN LESSON PREPARATION 327 



121. 12. What is said about people who are too partic- 

 ular to drink from the same cup another has used? 

 13. Why cannot the sense of smell be trusted to detect 

 the bad odor of the air in a room of which we are one of 

 the occupants? 14. In order to protect ourselves from 

 foul air, what should we get into the habit of noticing? 



15. How does the amount of air consumed by an artificial 

 light compare with the amount a person will use? 



16. What artificial light consumes the least air? What 

 light consumes the most? Compare a kerosene lamp with 

 a gas jet; a gas jet having a mantle with an ordinary gas 

 jet. 17. Give the meaning of justifiable, accidentally, un- 

 detected, page 123. 18. Why is furnishing impure air for our 

 guests to breathe even worse than serving them decaying 

 food to eat? 19. Give synonyms of confined, terrible, sur- 

 vived, page 124. 20. Relate the incident of the " Black 

 Hole of Calcutta." 21. Give the meaning of steerage, com- 

 pelled, frenzy, violence, contriving, spectacle, page 125. 

 22. Tell the story of the steamer Londonderry. 23. State 

 why such fatal results of rebreathing air that has been 

 breathed out are infrequent. 24. What fact do the " Black 

 Hole of Calcutta" and the Londonderry incidents empha- 

 size? 25. Mention several bad effects of breathing im- 

 pure air, page 126. 26. State why it is unwise to have doors 

 and windows closed in summer time to keep out the dust. 

 27. What are Nature's remedies? 28. How can we have 

 pure air while sleeping? 29. Tell about the treatment 

 of consumptives, at mountain resorts and sanitariums. 



30. Give antonyms of occasionally, gradually, abundant, 

 nutritious, completely, practical, pages 128 and 129. 



31. What has an enforced stay at mountain resorts taught 

 some people ? 32. Why is the practice of having the doors 

 and windows of any sick person's room closed usually 

 unwise? 33. Give synonyms of needless, wonders, spark- 



