Salve,
Thus far, I've only had my players dealing with books and tomes related to only one art or ability.
I've seen plenty of published books out there that act as summae or tractati of multiple arts or abilities.
I realize that a book solely on IGNEM with a quality of 8 nets a player with 8 experience points towards that ability for a season of reading, but what about the others?
Example:
A player finds a hefty tome that is a Summa is Magic Theory (Level 6 quality 5), and a summa of Ignem (level 7, quality 5). Does a season of reading this tome grant 5 exp in both Magic theory AND ignem, or does the reader have to choose which gain he takes?
For as long as we've been playing, you'd think I should know this by now, but I've looked the Long-term events chapter over twice without finding a real answer.
Anyone know?