RAINBOW ELECTRICITY, 33 



either around or at some distance before us, we 

 may see in the air opposite to the sun a large bow, 

 of bright and beautiful colours, which is called a 

 rainbow. This striking appearance is caused by the 

 sun's rays being refracted, or broken, in the falling 

 drops. The uppermost colour of the rainbow is red, 

 and the lowest violet. The moon also sometimes 

 shows a rainbow, formed by the refraction of her 

 rays in drops of rain during the night : but this 

 appearance, called the lunar rainbow, is very rare* 



Questions, 



Where is evaporation most copious ? 

 How is rain produced ? 

 What is snow ? 



Why does snow fall so slowly T 

 What is hail ? 



What produces the appearance called the rainbow T 

 What name is given to the rainbow formed by the moca's 

 rays! 



LESSON VIII. 



ELECTRICITY THUNDER AND LIGHTNING. 



GOD has also provided a matter, respecting 

 which we know little more than^ that it commu- 

 nicates to certain bodies the power sometimes 

 of attracting, and sometimes repelling, other bo- 

 dies. At the same time a spark of light appears, 

 a snapping noise is heard, and a shock is commu- 

 nicated. This matter is called electricity. 



