The Potions Textbook

[B.G.]

No: HPFGUIDX 135240

BG thinks:
It would be interesting to compare Hermione's notes from past Snape's 
potions class to the corresponding year's textbook.  Could it be that 
Snape enhanced the lessons from the book and that is why he wrote the 
instructions on the board instead of having the students use their 
books?  If Hermione discovers this then she will encourage Harry to 
return to Hogwarts for the book.  They may need it to survive finding 
and destroying the horcruxes.  Snape is no longer around to prepare 
life saving potions for them as he did for DD.