Monitoring of Harry's magic outside Hogwarts

[Arya]

No: HPFGUIDX 91263

"drjuliehoward" <drjuliehoward at y...> wrote:
> We all know that the MoM monitors the use of magic by underage 
> wizards outside of Hogwarts, and that Harry gets "owled at" about 
> it.  One of the charges was "the use of a hover charm at 4 Privet 
> Drive" in CoS.  However, Harry did not use the hover charm; Dobby 
> did.  So my questions:
> 1) Can the MoM only detect that magic was performed but not by 
whom, thus assuming it could only be Harry?--------
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I don't think this is true because we see Tonks use sock-folding, 
trunk-packing and owl-cage cleaning charms in Harry's room before he 
flys off with his guard in OotP. 

Another note on this I recently saw when reading the letter from 
Mafalda Hopkirk, the notice only says that *spells* are not to be 
performed by underage wizards.  It doesn't say *magic* is monitored.  
Hmm, I could go on for a bit about this but I'd need the books to see 
the exact quotes.

Arya