I have volumes I - X in my ipad all except volume IX.
Probably still in copyright. [:)]
You can confirm this in your Library Browser as well.
Isn't that because IX was an INDEX, and the Logos Indexing is a lot better?
You are right, that volume doesn't exist in Logos 4 either. Whatever the reason, it clearly isn't missing from the iphone app. A definitive response about why volume IX doesn't exist would be nice. Does anyone have it in hardback to confirm that it is the index?
In the printed edition Volume 9 contains Gospel of Peter, Diatessaron, Testament of Abraham, Epistles of Clement, Origen and some miscellaneous works.
So it does appear to be an important volume that is simply missing.