Algari Treatise of Alchemy and Inscription

Gameplay Professions
1

I have 41 skill in alchemy and 35 knowledge points stored. I have not unlocked any specializations yet. When I click an Algari Treatise of Alchemy I get the message I cannot learn more from them as I have studied them extensively!

How is that possible? The same goes for Treatise of Inscription though I have a higher skill there and have unlocked several specialisations.

2

You can use them only once per week.

3

Once per week, if not we would already have thrown gold at it to get all the skill points in all talent trees