--- a/ReindexedCollection.st	Fri Jan 08 15:46:43 2016 +0100
+++ b/ReindexedCollection.st	Wed Jan 13 16:07:35 2016 +0100
@@ -11,6 +11,8 @@
 "
 "{ Package: 'stx:libbasic2' }"
 
+"{ NameSpace: Smalltalk }"
+
 SequenceableCollection subclass:#ReindexedCollection
 	instanceVariableNames:'sequence interval'
 	classVariableNames:''
@@ -321,11 +323,17 @@
     "Answer the preferred class for reconstructing the receiver, that is, the sequence."
 
     ^ sequence species
+!
+
+speciesForAdding
+    "Answer the preferred class for reconstructing the receiver incrementally"
+
+    ^ sequence speciesForAdding
 ! !
 
 !ReindexedCollection class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libbasic2/ReindexedCollection.st,v 1.8 2013-06-25 11:23:58 cg Exp $'
+    ^ '$Header$'
 ! !