Part,  Chapter

1      I,  V    | been trying to any one not inured to the rigour of a Polar
2      I,  X    |    they have often proved, inured to the rigours of the Arctic
3      I,  XVIII|  none but those thoroughly inured to the horrors of these
4     II,  II   |   Mrs Barnett. The latter, inured to danger, showed no fear;