Feature type: river
Segment grid: 5B5
The river's name can only be inferred from the the name "Silarvm Fl." assigned to a route stretch which it crosses. Admittedly, it would be very awkward to place a name at either the source or mouth of this river.
Our copyist evidently first made river #59 a branch of this river #60, but then erased the upper part of 59's course, leaving it a separate river with its source in mountain range #46 lower down. There is no knowing whether our copyist was just careless initially, or whether he first followed what was drawn on the version he copied, but then took the initiative of correcting of what he perceived to be an error there [compare note under river #8].