Quirrel's remains

[Sirius Kase]

No: HPFGUIDX 44221

Pardon me for being gruesome, but I've been wondering what sort of remains
Quirrel left behind.  In the book, I imagined a badly blistered but still
identifiable body.  But in the movie, I don't think the remains were shown.
It appears that he just disintergrated into dust.  Or maybe he was cremated.
I wonder if it really matters.  I'm sure that his absence from the school
will be noticed and Harry's explanation seems reasonable.

Sirius Kase