Need to find out if this is a load bearing wall on my second floor
Probably not load bearing because:


This wall runs parallel to the ceiling joists (doubt they are trusses in an 1892 house), and 
it doesn't seem to have load-bearing structure below (though it's possible there's a bearing beam underneath, inside the floor/ceiling).


Of course, if you want to be sure you should have it inspected in person by a builder or engineer. They will want to confirm that any load above this wall is adequately supported by other structure. They may also do some less scientific testing like attempting to wiggle the wall studs. Both forms of inspection are helpful because in old houses, sometimes things are modified or settle such that even members not originally designed to be load-bearing end up carrying some load.

Even if all signs point to the wall not bearing significant load, be careful when starting to demolish it. If your saw binds up while cutting through a stud, that's a sign there is compression load on that stud and you should stop and shore up the structure before continuing demolition.