Ok, here's The Time-Tested Old-School Way of determining which side of the paper is which if you can't tell by sight or by touch:
Touch the slightest corner of one side of the paper to your damp (not wet) lip.
If it wants to stick, it's the emulsion side.
If it doesn't want to stick, it's the base side.
Touch the slightest corner of one side of the paper to your damp (not wet) lip.
If it wants to stick, it's the emulsion side.
If it doesn't want to stick, it's the base side.

