I think I may have got myself stuck

[MasqueradeCry]

There are - everywhere the pillar of light shines there lies a chest. They can be dug up with the spade icon near the mini-map or by pressing D - this element to the game is explained during the tutorial I believe. Did you skip it?

[Edit : Also, I'd like to throw another question out there if I may. What use is there for bonuses to scroll slots? Surely there comes a point where you no longer buy any scrolls as the spells you need are learnt permanently (and above the first level of the spell). As I understand things, you can pick up as many map-found scrolls as you like and the limit only applies to actually buying scrolls - so is it as useless a bonus as it seems to me?]