[plt-scheme] How big is a cell?

When I see that some 50 million cells have been reclaimed through  
garbage collection, I wonder what that means in practical terms.  
Assuming that pairs are basically binary trees and that cons cell can  
normally hold about a word (I assume strings are treated internally  
as lists), then I'd expect it to be something like a 64 or 128 bytes,  
but that's just a guess.

===
Gregory Woodhouse
gregory.woodhouse at sbcglobal.net

"One must act on what has not yet happened."
--Lao Tzu