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THE POLAR WORLD. 



WESTERN HEMISPHERE. 



[In the Western Hemisphere, the Polar World includes the space between the 

 Pole and latitude 50° North, and between the Pole and latitude 40° South. The 

 Temperate Zones are between latitude 50° and 30^ North, and 40° and 30° South. 

 Thus in the Western Hemisphere the two Polar regions are 10^ broader, and the 

 Temperate Zones 10° narrower than in the Eastern Hemisphere.] 



