diff --git a/lemon/lgf_reader.h b/lemon/lgf_reader.h
--- a/lemon/lgf_reader.h
+++ b/lemon/lgf_reader.h
@@ -2221,13 +2221,6 @@
       return _edge_maps[i];
     }
 
-    /// \brief Returns true when the section type is \c "@arcs".
-    ///
-    /// Returns true when the section type is \c "@arcs", and not "@edges".
-    bool isArcSection(int i) const {
-      return _arc_sections[i];
-    }
-
     /// @}
 
     /// \name Edge sections   
@@ -2254,13 +2247,6 @@
       return _edge_maps[i];
     }
 
-    /// \brief Returns true when the section type is \c "@edges".
-    ///
-    /// Returns true when the section type is \c "@edges", and not "@arcs".
-    bool isEdgeSection(int i) const {
-      return !_arc_sections[i];
-    }
-
     /// @}
 
     /// \name Attribute sections