CHAPTER XXXII.
The Open Polar Sea.--Width of the Polar Basin.--Boundaries of the Polar Basin.--Polar Currents.--Polar Ice.--The Ice-Belt.--Arctic Navigation and Discovery.--The Russian Sledge Explorations.--Wrangel's Open Sea.--Parry's Boat Expedition.--Dr. Kane's Discoveries.--Expansion of Smith Sound.--General Conclusions drawn from my own Discoveries and those of my Predecessors
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