The Mighty Deep 



mass of ice snaps off from the glacier-foot and 

 springs to the surface, making the waters 

 seethe and swirl with the shock, and sending 

 heavy waves in all directions. Then the 

 buoyant mass floats away as a newly made 

 Iceberg. 



Some Icebergs, broken thus from a Green- 

 land glacier, are two or three hundred feet high. 

 That is to say, a sailor on board a ship can see 

 two or three hundred feet of solid ice above the 

 surface of the sea. But this is by no means the 

 true iceberg height. 



When we talk of Ice " floating," we do not 

 mean that the whole piece of Ice rests upon the 

 top of the water. It floats in the water. Only 

 about one-eighth of it is visible above, and the 

 other seven-eighths are hidden below. So In 

 the case of an iceberor risino; two or three 

 hundred feet above the sea, we may be sure 

 that at least seven times as much Ice is under- 

 neath the ocean-surface. This shows what an 

 enormous mass the whole of a floating Ice- 

 mountain must be. 



No wonder that a certain iceberg, which held 

 its head one hundred and fifty feet high, should 

 have run aground in water ^v^ hundred feet 

 deep ! No wonder, either, that when two such 



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