96 



THE WONDERS OF GEOLOGY. 



Lect. 



rose in a large column, accompanied by clouds of steam, to 

 the height of ten or twelve feet. The column seemed to 

 burst, and sinking down, produced a wave, which caused 

 the water to overflow the basin. A succession of eighteen 



*s? 



Lign. 13. — Plan of the Geyssrs of Iceland. 



or twenty jets now took place, some of which rose to a 

 height of from fifty to ninety feet. After the last erup- 

 tion, which was the most violent, the water suddenly dis- 

 appeared, and sunk down the pipe in the centre, to a depth 

 often feet; but in the course of a tew hours the pheno- j 

 mena were repeated, and with increased energy. The 



