314 



PHYSIOGRAPHY. 



[chap. 



The preceding sketch of the disposition of the form and 

 size of the dry land takes no account of many considerable 

 islands ; and especially leaves out of consideration those 

 which,. like Greenland, are covered with ice and snow, and 

 are rendered almost inaccessible by the accumulation of 

 ice in the sea which surrounds them, (See Fi^. 95.) 



Fig. 95. — Map of Arctic regiuns. 



The total area of dry land has been estimated at about 

 52,500,000 square miles (DLXXXIIL). Whether the 

 voyager travels south, or north, from the coasts of this dry 

 land, his progress is, sooner or later, stopped by the ice, which 



