Levicorpus

[jycmutoni]

No: HPFGUIDX 155640

> Katie:
> No, we never have clear explanation of how James knew it -
> but in either OotP or HBP, <snip> Lupin tells Harry that
> (paraphrasing) "Everyone was doing it" or at least that's
> the essence of the conversation. My feeling after reading
> HBP was that Snape probably shared it with some Slytherins
> and it got around, the way things would in a boarding
> school <snip>

Joyce:
In book 6, we learn that Harry saw his dad use the same spell.
Towards the end of this book, we learn that Snape is the halfblood
prince and that he invented most of those spells Harry was using
from the potions book. From this I therefore conclude that Snape
and James were at Hogwarts around the same time and James must
have learnt about the spell after Snape had demonstrated some
action.

Joyce