--- a/include/topology/filtration.hpp	Mon Sep 15 16:40:03 2008 -0700
+++ b/include/topology/filtration.hpp	Mon Sep 15 16:41:18 2008 -0700
@@ -6,7 +6,6 @@
 #include <boost/serialization/vector.hpp>
 #include <boost/serialization/nvp.hpp>
 #include <boost/serialization/list.hpp>
-#include <boost/serialization/is_abstract.hpp>
 
 using boost::serialization::make_nvp;
 
--- a/include/topology/vineyard.h	Mon Sep 15 16:40:03 2008 -0700
+++ b/include/topology/vineyard.h	Mon Sep 15 16:41:18 2008 -0700
@@ -14,7 +14,6 @@
 #include <boost/serialization/vector.hpp>
 #include <boost/serialization/nvp.hpp>
 #include <boost/serialization/list.hpp>
-#include <boost/serialization/is_abstract.hpp>
 	
 
 template<class Smplx>	class Knee;