ICEBERGS THEIR FORMS. 



151 



heat of the water and atmosphere united accom- 

 plishes their dissolution. They sometimes travel as 

 far south as Florida with the southerly current that 

 flows along that coast ; but the warm waters of the 

 Gulf Stream, together with its northerly flow, form 

 an impassable barrier between these ice-mountains 

 and Europe. 



Icebergs assume every variety of form, and almost 

 every size. They sometimes resemble castles, 



