184 INSECTS, AND THEIR RELATION TO MAN 



5. Why should you talk with your neighbor about the fly 

 nuisance ? 



6. Why should extra precautions be taken to keep flies 



away from those 

 suffering from con- 

 tagious diseases? 



7. How may bac- 

 teria enter the bodies 

 of children ? 



8. What objec- 

 tions to the ordinary 

 way of sweeping? 



9. Why should 

 garbage cans be 

 sprinkled with kero- 

 sene or lime ? 



10. Write a para- 

 graph on the neces- 

 sity of street and 

 home cleanliness. 



Home Work. 1. 

 Catch a few flies and 

 place them under 

 an inverted gallon 

 jar, or catch a num- 

 ber in an ordinary 



FIG. 51. Showing why open spittoons should 

 not be used by any one especially by dis- 

 eased persons. 



wire trap. Place a small amount of pyrethrum powder in a 

 small paper funnel, ignite it, and place in the jar or cage. 

 Result? 



2. Heat a few drops of carbolic acid on a shovel in a room 

 where there are flies. Result? 



Conclusion. Why should pyrethrum powder be burned 

 in the home at times, especially in the kitchen and dining 

 room? What is the effect of carbolic acid vapor? 



