Signs of Ascent or Descent.
16. 1. When the Aironaut perceives a Pressure upwards against the Soles of his Feet.
2. When some Objects, on the Surface of the Earth immediately below, diminish, and others disappear.
3. When an upper Cloud approaches or involves the Balloon.
4. When a lower Cloud leaves the Balloon.
5. When Rain Snow or Hail beat violently against the Top of the Balloon.
6. When Feathers, Balloon-Flag, or Ribbon seem to be drawn forcibly downwards.
7. When Objects on Earth, or among Clouds below the Balloon, rise and present themselves beyond those, which, the moment before, were thought most distant.
8. When the Balloon appears broader and shorter; also fuller at the Bottom; being more distended than at the first Ascent.