GAS AS A FUEL 141 



QUESTIONS 



1. Why will damp hay in a barn take fire? 



2. Why must one be careful not to throw in a pile waste and rags 

 which have been used about an automobile engine? 



3. Overalls which are oily will sometimes take fire if thrown in a 

 heap on the floor and left for a long time. Why? 



4. Why will hanging the oily overalls on a nail prevent spon- 

 taneous combustion? 



5. Why must wood fires be arranged loosely in order to burn well? 



6. Why does a bale of cotton or a pile of sawdust smolder if on 

 fire? 



7. How are fires put out on shipboard? 



8. Why should a person whose clothes are on fire never run out- 

 of-doors? 



9. What is the best way of extinguishing a flame when one's 

 clothe stake fire? 



10. Why is one able to stamp out a fire? 



11. Why will a burning match go out if covered with the foot? 



12. Why should not water be used on an oil fire to extinguish it? 



13. What is the best method of preventing oxidation of a house, 

 iron, brass? 



14. What is the best method of putting out a fire in a room? 



15. What would you do if the lace curtains caught fire? 



16. When one stops all night in a hotel what precautions should 

 be taken as to fire? 



17. Find out the fire requirements of your town iegarding inflam- 

 mable oil, fire extinguishers in public buildings, school fire drills, etc. 



18. Is your school living up to the requirements? Insist that it 

 does. This is a part of good citizenship. 



GAS AS A FUEL 



Parts of a Flame. If a sheet of cardboard is held in a candle 

 flame or gas burner, the paper will be scorched in the shape of a 

 ring, the middle of the ring being unburned. Run a pin through 

 a match, near the head, and place it carefully upright in the center 

 of a Bunsen burner. Light the burner. The match will not take 



