The Protection of Health 609 



ing. Why? 7. In what ways do modern ideas and practices accord 

 with the old adage " An ounce of prevention is worth a pound of cure " ? 

 8. It is reported that every member of an Arctic expedition was free 

 from colds except on two occasions ; one when the cabin carpet was 

 taken up and cleaned, the other when new underclothing was un- 

 packed. Explain. 9. What is the dust of a " puff ball "? 10. Man 

 has been instrumental in the extermination of the wild pigeon, and 

 possibly of the cavebear and the mastodon. It is not known that he 

 has exterminated a single species of bacteria or protozoa. Explain. 

 11. Which has been the more important to human welfare, the micro- 

 scope or the telescope? Why? 12. What new uses have recently 

 been found for waxed or paraffined paper ? Why ? 13. Did bacteria 

 exist before man? Give reasons for your answer. 



14. Compare the city and the country as to advantages and dis- 

 advantages in respect to health. 15. Some people keep the window 

 shades drawn to keep out the sunlight. What reasons are there for 

 and against this practice? 16. Primitive people used open, smoky 

 fires in then* tepees or huts. How was this hygienic? 17. Are the 

 natural defenses or the special measures against disease the more 

 important? 18. What scientific reasons are there for the use of rugs 

 rather than carpets? For the use of the vacuum cleaner rather than 

 the broom? 19. What are some of the reasons why smallpox is no 

 longer epidemic in the United States? 



20. By what means does man strengthen his natural defenses 

 against disease? What practices do you think tend to weaken the 

 natural defenses? 21. Why should you be interested in maintaining 

 good health ? Why should you be interested in the health of others ? 

 22. Why is the fungus disease of the fly more likely to be epidemic 

 among flies in the fall than in midsummer? 23. What are some of 

 the differences between seeds and spores? 24. In what respect do 

 fungi and bacteria resemble animals? green plants? 25. Do you 

 know of any kind of plant or animal that is not useful to some other 

 kind ? 26. What would you presume to be the business of a company 

 from its name " Farmogerm Company"? 27. What other living 

 things besides the crops and his stock should the farmer consider in 

 his business ? 28. Are all kinds of plants and animals that you know 

 useful to man? Support your answer with specific references. 



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