114 volcanoes; earthquakes. 



Besides, however much the temperature within 

 the earth may still be lowered, the condition of 

 its outer shell, with respect to heat, cannot be 

 much changed thereby ; because the escape of heat 

 from within, compared with that which comes to 

 it from the sun, amounts at present, by reason of 

 the very slight conducting power of the earth, to 

 almost nothing. 



