Water, earth and air

[Jorge_Stolfi]

In the Voynich Manuscript, those knotty edges, or whatever you want to call them, represent the sphere of the fixed stars, the boundary of the medieval universe.

Well, those in the Bio section definitely don't.  Except perhaps for the one under the pangodillo, all the "sinuous lines with swollen knobs" in that section obviously depict edges of water bodies or splashing water.  There is nothing in that section that would make one think of the Heavens, astronomy, or astrology.

All the best, --stolfi