Water, earth and air

[Jorge_Stolfi]

BTW,  I noticed the number of undulations is the same : 43.

Good eye! 

So perhaps the Author and/or Scribe did not understand what the wolkenband was, and did not think that the specific shape of and shading of the "knobs" was important, but believed that the number of knobs was very important?

That is all the more remarkable if we consider that the shape was deformed from circular to a rough octagon, and that some of the "rivers" that fed the "pool" connected to the knobs.

There are 6+5+5+5 = 21 stars in the "pool". Double that is 42, one less than 43. A coincidence?

But when they got to the Central Rosette of f85v2 they had learned the proper style, at least.  (And the Painter knew that the necks of the knobs had to be blue.)

Are there other wolkenbands in the VMS?  On f79r1 there is something that could be an intermediate stage between f68v3 and the Central Rosette...

All the best, --stolfi