Chapter

 1 II   |        burning question of the direction of balloons.~In this great
 2 III  |     working at an angle to the direction of the wind, and even against
 3 VII  | obstinately worked away in the direction of balloons, he held in
 4 VII  |      The helix advances in the direction of its axis. Is the axis
 5 VII  |      spun round in a different direction from the others, so as to
 6 XI   |      full speed in a northerly direction.~It may be imagined with
 7 XV   |        been due south. If that direction was persisted in they would
 8 XV   |      slowly down in an oblique direction. Soon she emerged from the
 9 XVII |      in the bow, looked in the direction pointed out by the mate.~
10 XXIII|       her safety in a vertical direction, not dropping to the ground,