Part,  Chapter

1      I,  XV  | Bathurst rises abruptly, like a perpendicular wall, from water three hundred
2     II,  I   |      This is why its shores are perpendicular, this is why we found ice
3     II,  IV  |      water. They were perfectly perpendicular, without the slightest slope,
4     II,  VI  |   attempted to climb the almost perpendicular sides of the promontory;
5     II,  VIII|    along a level beach when the perpendicular shores had once checked