OK, I admit I've played this game for several hundred hours, and I have never figured out how to use scrolls. I click on them in my inventory menu, see that my hands are loaded for the spell -- and nothing happens when I try to throw them by pressing the correct mouse button. Either my game has glitched them or I'm missing something.

Bump. Anyone? I'm facing the same problem.

It should work like that?

Just equip and use as a spell.

Once you equip the scroll, it is the same as equipping a magic spell.

When you leave the inventory screen, ready your self and your hands should pop up with spell ready to be cast.

Remember, you have to equip a new scroll each time you cast the spell. It is a one use item, not a one battle item.

It doesn't depend on magic does it? Meaning I could have zero magic & still be able to cast the spell from the scroll?

Some scrolls you need to hold the button down for a few seconds.

Correct.
The magic is in the scroll, so to speak and doesnt cost you anything.

Ah, I think that might be the reason I couldn't figure it out.

Thanks!