Detection of Underage Magic

[catherine at cator-manor.demon.co.uk]

No: HPFGUIDX 23387

--- In HPforGrownups at y..., "Meg Rose" <megrose_13 at y...> wrote:
> One thing i don't understand on this subject is that if they 
couldn't 
> tell if the hover charm was used by Dobby or Harry, how can they 
tell 
> if any magic going on is neccesarily due to children in say, the 
> Burrow??

Well, this is partly the point - that underage magic is probably less 
rigorously enforced for just that reason.  In Harry's case, and 
probably in the cases of other children who live in a Muggle 
environment, the magic would stand out like a sore thumb because 
there aren't any adult witches/wizards there.  As Harry is the only 
person who should be there who is magical, they probably assumed that 
it was him - either that or Dobby grassed on him.

Catherine