07-04-2016, 08:15 AM
It's directly before two missing folios (91 & 92), so it's possible that whatever was spilt mainly landed on the bifolio opposite and caused them to be ruined, or so badly damaged that they were later discarded. So it could be some sort of transfer from those pages.
But a great explanation by Wladimir!
But a great explanation by Wladimir!

