Sorcerous Stone?

[Judy]

Here is a very very minor point that I've been wondering about.

In Order of the Phoenix, Harry and a bunch of students are in the 
Hogshead tavern, with Harry presenting his idea for teaching them DADA. 
Several of the students praise Harry's previous accomplishments against 
Voldemort.  Neville says that Harry rescued the "sorcerous" stone, and 
Hermione corrects him by saying "Sorcerer's."

In the original (British) books, the stone was called the Philosopher's 
Stone (as it should have been), not the Sorcerer's Stone.  So, what 
does Neville call the stone in the UK version of OoP?  Phosphorus 
Stone? ("Sorcerous stone" always struck me as a kind of lame error; it 
sounds almost the same as "Sorcerer's stone.") 

By the way, if House Elves had house cats, they'd probably look just 
like this:
http://www.dailykitten.com/archives/536-Mickey.html

-- Judy, getting back into Harry Potter after a busy summer