80 CHEMICAL ACTION. 



A. 1st Because the flame very soon 

 exhausts the little oxygen contained in the 

 paper extinguisher : and 



2ndly The flame invests the inside oj 

 the paper extinguisher with carbonic acid 

 gas, which prevents it from blazing. 



Q. Why is a LONG WICK never upright ? 



A. Because it is bent by its own 

 weight. 



Q. Why is a LONG WICK covered with an 



EFFLORESCENCE at the top ? 



A. The knotty or flowery appearance 

 of the top of a wick arises from an 

 accumulation of particles partly separated, 

 but still loosely hanging to the wick. 



Q. Wtiy is not the END of a long wick BURNT 

 OFF, as it hangs over the flames ? 



A. Because the length of the wick 

 so diminishes the heat of the flame, that 

 it is not hot enough to burn it off. 



Q. Why do PALMER'S METALLIC WICKS never 

 need SNUFFING ? 



A. The wick is divided into two 

 parts, each of which bends outward to 

 the outside of the flame ; where the end 

 is intensely heated, and separated from 



