I hope your summer break is going well as I'm afraid this letter might briefly interrupt it.  I'm writing to ask you about the nature of crystal balls.  I did not struggle as much with them as with tarot cards in in school but I can't recall if you went over what part of crystal balls lends itself to the Inner Eye.

I am sure you heard about the fog that settled over Irvingly (if you haven't you might want to read the papers because it's spread to Hogsmeade).  For a while I had to walk through it the edges of it to be able to apperate and whenever I did it seemed to sort of nag at my Sight.  Like a kind of itch.   

Now the fog has expanded so much its not really practical to leave anymore and I've so much time on my hands i started wondering... Could the fog be working like a crystal ball?  Which lead to my question - is it the crystal or the swirling mist inside?