Peter vs. Sirius once again

[Mike Schubert]

No: HPFGUIDX 12433

--- In HPforGrownups at y..., "nykteris" <nykteris at p...> wrote:
> If it is possible (and easy!) to discover the last spell the wand 
> performed, why isn't this procedure widely applied - also in Black's 
> case? 

That's a good point. The other thing about that scene that's always 
bugged me is that it says Peter cut off a finger and then changed into 
a rat and ran away with the rats, while Sirius stood there cackling 
maniacally. Why didn't either of them disapparate? I mean, perhaps 
Sirius was so strung out at that point that he didn't think of it, but 
what possessed Peter to run away with the rats as opposed to just 
apparating to somewhere else? Do you suppose there's any way to track 
where someone's apparated to/from? Because if not, it would make 
catching people awful hard...
-Mike