The Arctic WorldNote 4 — Chapter I · THE NORTH POLE—THRESHOLD OF THE UNKNOWN WORLD—THE CIRCUMPOLAR REGIONS—THE FLORA OF THE NORTH—LIFE IN THE POLAR WORLD—THE NORTH-WEST AND NORTH-EAST PASSAGES.Reading editionPinus Banksiana.◇Copy noteReturn to CHAPTER I. THE NORTH POLE—THRESHOLD OF THE UNKNOWN WORLD—THE CIRCUMPOLAR REGIONS—THE FLORA OF THE NORTH—LIFE IN THE POLAR WORLD—THE NORTH-WEST AND NORTH-EAST PASSAGES.