Part,  Chapter

1      I,  VI  |           that the melted ice will impede the sliding of the sledges;
2      I,  XII |            only the icebergs which impede the free navigation of the
3      I,  XIII|             This arrangement would impede the entrance of the outer
4      I,  XIII| receptacles of ice. The partitions impede the ventilation; and the
5     II,  XIII|        surface which would greatly impede his progress, and render