288 GENERAL SCIENCE 



7. How could a drinking fountain be constructed so as to avoid 

 the danger of having the teeth broken if some one accidentally hit 

 a person while drinking? 



8. Examine the fountains in your building to see if this has been 

 provided for. 



9. Why is placing ice from ponds in drinking water objectionable? 



10. What care should be taken of wells? Of cisterns? 



11. Locate several wells you know of, and tell whether they are 

 properly or improperly located? 



12. Why are fire hydrants necessary in cities? 



13. Where is the hydrant nearest to your home? 



14. What would you do in case of fire? 



15. Why is it necessary to attach fire engines to hydrants? 



16. What provision has been made in your home against sewer 



17. How would you be able to test the drain pipes of your home 

 for sewer gas? 



