257 



XXL 



VOLCANOES AND EARTHQUAKES. 



You may have heard of volcanoes, or burning 

 mountains, and I am going to tell you something 

 about them, as it is a very interesting subject. 



There can be no doubt that extraordinary 

 revolutions are constantly taking place in the 

 earth, some occasioned by earthquakes and 

 others by volcanic eruptions from mountains 

 sometimes there is a waste of waters where, a 

 few years before, ah 1 was land, and the only land 

 visible consisted of that which was uplifted by a 

 recent earthquake. It has been calculated that 

 there are about 2000 eruptions from burning 

 mountains in the course of one hundred years, 

 which would give about twenty every year. 

 One of the most celebrated eruptions was that 

 of Mount Vesuvius, in the year 79, in the time 



