How do I solve Summoning Sciences quest at the circle tower?

I was able to activate the first 3 invocation "portals". The note you get explains how to activate those, but i found a fourth one, behind some bookcases in a circular room just before going up to the second floor. Is there any way to activate it?

Accepted Answer

Posted by nafnir
on Nov 11, 2009 1:16 am GMT

Do the pattern for the first 3 all at once then go check the fourth portal.

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