Chapter

1 III  |   to give the aerostat its motion a great deal of progress
2 VII  |   sustain it, although the motion of the wings becomes slower.~
3 VII  |   air and other mechanical motion. He employed electricity,
4 VII  |   few would not affect the motion of the others; and if only
5 XXII |  when the atmosphere is in motion is quite another thing;
6 XXII | provided for this vertical motion. Without throwing out ballast
7 XXIII|  who reversed the gyratory motion of the fore propeller and