diff --git a/lemon/clp.h b/lemon/clp.h
--- a/lemon/clp.h
+++ b/lemon/clp.h
@@ -56,6 +56,11 @@
     /// \e
     ~ClpLp();
 
+    /// \e
+    virtual ClpLp* newSolver() const;
+    /// \e
+    virtual ClpLp* cloneSolver() const;
+
   protected:
 
     mutable double* _primal_ray;
@@ -66,13 +71,11 @@
 
   protected:
 
-    virtual ClpLp* _newSolver() const;
-    virtual ClpLp* _cloneSolver() const;
-
     virtual const char* _solverName() const;
 
     virtual int _addCol();
     virtual int _addRow();
+    virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u);
 
     virtual void _eraseCol(int i);
     virtual void _eraseRow(int i);
@@ -134,6 +137,8 @@
 
     virtual void _clear();
 
+    virtual void _messageLevel(MessageLevel);
+    
   public:
 
     ///Solves LP with primal simplex method.
@@ -151,26 +156,6 @@
     ///Returns the variable identifier understood by CLP.
     int clpCol(Col c) const { return cols(id(c)); }
 
-    ///Enum for \c messageLevel() parameter
-    enum MessageLevel {
-      /// no output (default value)
-      MESSAGE_NO_OUTPUT = 0,
-      /// print final solution
-      MESSAGE_FINAL_SOLUTION = 1,
-      /// print factorization
-      MESSAGE_FACTORIZATION = 2,
-      /// normal output
-      MESSAGE_NORMAL_OUTPUT = 3,
-      /// verbose output
-      MESSAGE_VERBOSE_OUTPUT = 4
-    };
-    ///Set the verbosity of the messages
-
-    ///Set the verbosity of the messages
-    ///
-    ///\param m is the level of the messages output by the solver routines.
-    void messageLevel(MessageLevel m);
-
   };
 
 } //END OF NAMESPACE LEMON