O ELECTRICITY. 



Q. Why 'is the FLASH sometimes quite 



STRAIGHT ? 



A. When the lightning-cloud hovers 

 near the earth, as the flash meets with 

 very little resistance, it is not diverted ; or 

 (in other words) the flash is straight. 



Q. What is the cause of SHEET LIGHTNING ? 



A. It is only the reflection of distant 

 flashes, not distinctly visible : and some- 

 times several flashes (from different 

 clouds) intermingle, and form one vast 

 blaze or sheet of lightning. 



Q. Which FORM of lightning is the most 



DANGEROUS ? 



A. The ball of fire is by far the 

 most dangerous ; and the zig-zag light- 

 ning is next in danger. Sheet lightning 

 is not often attended with danger. 



Q. Why are BALLS OF FIRE so very dan 

 gerous ? 



A. Because (whenever they fall) 

 much mischief is occasioned by their 

 bursting, which they always do, with an 

 explosion like that of a cannon. 



Q. Do these BALLS OF LIGHTNING ever rim 

 along the ground ? 



