GEOLOGY. 



G65 



phenomena ■without mentioning the singular geysers of 

 Iceland, which are essentially connected with them. 

 They are hot springs which at certain times issue from 



302. Entrance to Fingal's Cave, Staffa. 



clefts in the ga-ound, and rise into the air in the form of a 

 great jet of boiling water. In the Great Geyser the watery 



.S03. Basaltic Cliffs and Gianfs Causeway, Staffa. 



eruption is preceded by dull sounds like artillery, at the 

 end of which a jet of vapour and boiling water is launched 

 into the air to a height of a hundred feet. 



