Floo/head-in-the-fireplace & Hogwarts defenses

[abigailnus]

No: HPFGUIDX 57590

--- In HPforGrownups at yahoogroups.com, "bowlwoman" <bowlwoman at y...> 
wrote:
> abigailnus wrote:
> 
> >However, this discussion, if I'm not mistaken, started with a 
> >question about Hogwarts defenses -if Hogwarts is so impregnable, 
> >how is it possible that its Floo fireplaces are connected to the 
> >outside world?
> 
> I think that LMPP may have discovered this type of "travel" 
> or "comminication" when they were students.  Sirius and Lupin are 
the 
> only to have ACTUALLY used this type of comminication that we've 
seen 
> around Hogwarts (Snape may have used the "Floo Calling Card", but 
he 
> didn't physically appear somewhere else). 

Do you mean that only Sirius and co. know how to do the head in the 
fireplace trick?  Because that is clearly contradicted by the fact 
that Amos Diggory does the same thing in the Burrow early in GoF.  
In fact, the narrative even tells us that, had Harry not seen Amos 
appear in the Burrow in this manner, the appearance of Sirius's head 
in the fireplace would have scared him out of his wits.  Not to 
mention that it is Amos, and not Sirius, who shows us that his head 
is physically in the fireplace by accepting a piece of toast from 
Molly.

Abigail