ELECTRICITY. 



Q. Is there any OTHEB cause of lightning, 

 besides the one just mentioned ? 



A. Yes ) sometimes mountains, trees, 

 and steeples, will discharge a lightning 

 cloud floating near; and sometimes 

 electric fluid rushes out of the earth, 

 into the clouds. 



Q. What produces ELECTKICITY in the CLOUDS ? 



A. 1st The evaporation from the 

 earth's surface. 



Sriclly The chemical changes per- 

 petually going on : and 



3rdly Currents of air of unequal 

 temperature, excite electricity by friction, 

 as they pass by each other. 



Q. How HIGH are the LIGHTNING-CLOUDS 

 from the earth ? 



A. Electrical clouds are the lowest of 

 all clouds ; they are rarely more than 

 700 yards above the ground; and 

 sometimes, they actually touch the earth 

 with one of their edges. 



Q. How high are the clouds generally ? 



A. In a fine day, the clouds are often 

 4 or 5 miles above our head ; but the 

 average height of the clouds is from 1^ 

 to 2 miles. 



