[split] f85r2

[Searcher]

And coincidentally (?) the above person in the picture on the next page is also the only one breaking the pattern.
In your picture, everybody is looking to their right, exept the upper guy, who looks left. In the next picture, everybody looks towards the reader, exept the upper guy who shows his back.
Do you see a connection here?

Tobias, thank you for your observations! 
These details really can be connected. First of all, as you pointed out, these images are on the neighboring pages. I think that exactly the Moon is a link between these two diagrams. The first diagram can be related to soli-lunar tides, and, possibly, the next diagram depicts the same aspect. I'm not sure that this are the four lunar phases, but I'm not ready to propose something better for now.
The three figures on f86v follows counterclockwise the same as the three fontains, and the upper figure is directed clockwise the same as the fontain next to it. I don't know whether it can be expained as direction of the flows. Medieval theories as for the tides were quite erroneous or even fantastic in their most part.