access nth argument list in a file

From: zippy747 (zippy747_at_hotmail.com)
Date: 03/21/05 

Date: 21 Mar 2005 13:57:34 -0800

for include in ${includes}
 do

 done

This accesses the last "includes" argument list in a file. How would i
access the nth "includes" argument list in a file?

i.e. the code above will iterate through "e f g h" but how do i
iterate through "a b c d"?
 
 includes="a b c d"
 includes="e f g h"

Thanks,
-zip