16 DANGER 



Q. Why are the ATTICS and CELLAR DAN- 

 GEROUS, during a thunder-storm? 



A. Lightning sometimes passes from 

 the clouds to the earth, and sometimes 

 from the earth to the clouds ; and there- 

 fore, the middle story of a house is always 

 the safest to be in, during a thunder- 

 storm. 



Q. When does lightning pass FROM THE 



EARTH tO the CLOUDS ? 



A. When the clouds are in a "neg- 

 ative" state of electricity. 



Q. When does lightning pass FROM THE 



CLOUDS tO the EARTH ? 



A. When the clouds are in a 

 "positive" state of electricity. 



Q. What is meant by the clouds being in a 

 ''positive state of electricity ?" 



A. Wfien the clouds contain more 

 electric fluid than they generally do, they 

 are said to be in a positive state of 

 electricity. 



Q. What is meant by the clouds being in a 

 " negative state of electricity ?" 



A. When the clouds contain less 

 electric fluid than they ought to do, they 

 are said to be in a negative state of 

 electricity. 



