Harry Wakes Up Early to Read from the Half-Blood Prince's Potions Book
Pages 237-238
On the morning of the Hogsmeade trip, Harry spends time reading the Half-Blood Prince's annotated copy of Advanced Potion-Making. He notes that the Prince has not only written useful potions tips but also various hexes and spells, including a non-verbal spell, *Levicorpus*. Despite the complexity of non-verbal spells, Harry decides to try the spell on his own.
