diff --git a/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.C b/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.C
index f699e17588..82a8df0cca 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.C
+++ b/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.C
@@ -220,7 +220,7 @@ void Foam::writeFuns::writePointDataHeader
 }
 
 
-void Foam::writeFuns::insert(const scalar& pt, DynamicList<floatScalar>& dest)
+void Foam::writeFuns::insert(const scalar pt, DynamicList<floatScalar>& dest)
 {
     dest.append(float(pt));
 }
diff --git a/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.H b/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.H
index cf7a4e992c..c38bbda669 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.H
+++ b/applications/utilities/postProcessing/dataConversion/foamToVTK/writeFuns.H
@@ -86,7 +86,7 @@ public:
 
     // Convert to VTK and store
 
-        static void insert(const scalar&, DynamicList<floatScalar>&);
+        static void insert(const scalar, DynamicList<floatScalar>&);
         static void insert(const point&, DynamicList<floatScalar>&);
         static void insert(const sphericalTensor&, DynamicList<floatScalar>&);
         static void insert(const symmTensor&, DynamicList<floatScalar>&);
diff --git a/src/OpenFOAM/db/scalarRange/scalarRange.C b/src/OpenFOAM/db/scalarRange/scalarRange.C
index 7623e14c27..393b19bba4 100644
--- a/src/OpenFOAM/db/scalarRange/scalarRange.C
+++ b/src/OpenFOAM/db/scalarRange/scalarRange.C
@@ -42,7 +42,7 @@ Foam::scalarRange::scalarRange()
 {}
 
 
-Foam::scalarRange::scalarRange(const scalar& lower, const scalar& upper)
+Foam::scalarRange::scalarRange(const scalar lower, const scalar upper)
 :
     type_(RANGE),
     value_(lower),
@@ -123,7 +123,7 @@ Foam::scalar Foam::scalarRange::upper() const
 }
 
 
-bool Foam::scalarRange::selected(const scalar& value) const
+bool Foam::scalarRange::selected(const scalar value) const
 {
     switch (type_)
     {
diff --git a/src/OpenFOAM/db/scalarRange/scalarRange.H b/src/OpenFOAM/db/scalarRange/scalarRange.H
index b996871664..f123809237 100644
--- a/src/OpenFOAM/db/scalarRange/scalarRange.H
+++ b/src/OpenFOAM/db/scalarRange/scalarRange.H
@@ -92,7 +92,7 @@ public:
         scalarRange();
 
         //- Construct a Range
-        scalarRange(const scalar& lower, const scalar& upper);
+        scalarRange(const scalar lower, const scalar upper);
 
         //- Construct from Istream.
         //  Since commas can be used as list delimiters,
@@ -119,7 +119,7 @@ public:
         scalar upper() const;
 
         //- Return true if the value is within the range
-        bool selected(const scalar&) const;
+        bool selected(const scalar) const;
 
 
     // Member Operators
diff --git a/src/OpenFOAM/db/scalarRange/scalarRanges.C b/src/OpenFOAM/db/scalarRange/scalarRanges.C
index c59e2b5a9d..f8b3c077b1 100644
--- a/src/OpenFOAM/db/scalarRange/scalarRanges.C
+++ b/src/OpenFOAM/db/scalarRange/scalarRanges.C
@@ -57,7 +57,7 @@ Foam::scalarRanges::scalarRanges(Istream& is)
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-bool Foam::scalarRanges::selected(const scalar& value) const
+bool Foam::scalarRanges::selected(const scalar value) const
 {
     forAll(*this, i)
     {
diff --git a/src/OpenFOAM/db/scalarRange/scalarRanges.H b/src/OpenFOAM/db/scalarRange/scalarRanges.H
index 5483454ae6..c3bf1ea668 100644
--- a/src/OpenFOAM/db/scalarRange/scalarRanges.H
+++ b/src/OpenFOAM/db/scalarRange/scalarRanges.H
@@ -66,7 +66,7 @@ public:
     // Member Functions
 
         //- Return true if the given value is within the ranges
-        bool selected(const scalar&) const;
+        bool selected(const scalar) const;
 
         //- Return the set of selected entries in the given list
         //  that are within the ranges
diff --git a/src/OpenFOAM/global/unitConversion/unitConversion.H b/src/OpenFOAM/global/unitConversion/unitConversion.H
index 0ab93f1a50..10cbd47b35 100644
--- a/src/OpenFOAM/global/unitConversion/unitConversion.H
+++ b/src/OpenFOAM/global/unitConversion/unitConversion.H
@@ -45,13 +45,13 @@ namespace Foam
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 //- Conversion from degrees to radians
-inline scalar degToRad(const scalar& deg)
+inline scalar degToRad(const scalar deg)
 {
     return (deg*pi/180.0);
 }
 
 //- Conversion from radians to degrees
-inline scalar radToDeg(const scalar& rad)
+inline scalar radToDeg(const scalar rad)
 {
     return (rad*180.0/pi);
 }
diff --git a/src/OpenFOAM/meshes/primitiveShapes/objectHit/objectHit.H b/src/OpenFOAM/meshes/primitiveShapes/objectHit/objectHit.H
index fe2bf09865..16e1fc3a22 100644
--- a/src/OpenFOAM/meshes/primitiveShapes/objectHit/objectHit.H
+++ b/src/OpenFOAM/meshes/primitiveShapes/objectHit/objectHit.H
@@ -76,7 +76,7 @@ public:
         {}
 
         //- Construct from components
-        objectHit(const bool success, const label& obj)
+        objectHit(const bool success, const label obj)
         :
             hit_(success),
             hitObject_(obj)
@@ -111,7 +111,7 @@ public:
         {
             return ((a.hit_ == b.hit_) && (a.hitObject_ == b.hitObject_));
         }
-            
+
         friend bool operator!=(const objectHit& a, const objectHit& b)
         {
             return (!(a == b));
diff --git a/src/OpenFOAM/primitives/hashes/Hash/Hash.H b/src/OpenFOAM/primitives/hashes/Hash/Hash.H
index dd16517dfe..b998daea1b 100644
--- a/src/OpenFOAM/primitives/hashes/Hash/Hash.H
+++ b/src/OpenFOAM/primitives/hashes/Hash/Hash.H
@@ -107,7 +107,7 @@ public:
     //- Incrementally hash a label.
     //  This will necessarily return a different value than the
     //  non-incremental version.
-    unsigned operator()(const label& p, unsigned seed) const
+    unsigned operator()(const label p, unsigned seed) const
     {
         return Hasher(&p, sizeof(label), seed);
     }
@@ -115,11 +115,10 @@ public:
     //- Return the unsigned representation of a label.
     //  This helps if people have relied on the hash value corresponding to
     //  the natural order.
-    unsigned operator()(const label& p) const
+    unsigned operator()(const label p) const
     {
         return p;
     }
-
 };
 
 
diff --git a/src/OpenFOAM/primitives/random/Random.C b/src/OpenFOAM/primitives/random/Random.C
index 848b3a5547..570817e692 100644
--- a/src/OpenFOAM/primitives/random/Random.C
+++ b/src/OpenFOAM/primitives/random/Random.C
@@ -47,8 +47,7 @@ namespace Foam
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-// construct given seed
-Random::Random(const label& seed)
+Random::Random(const label seed)
 {
     if (seed > 1)
     {
diff --git a/src/OpenFOAM/primitives/random/Random.H b/src/OpenFOAM/primitives/random/Random.H
index f611f90600..2339e607b5 100644
--- a/src/OpenFOAM/primitives/random/Random.H
+++ b/src/OpenFOAM/primitives/random/Random.H
@@ -61,7 +61,7 @@ public:
     // Constructors
 
         //- Construct given seed
-        Random(const label&);
+        Random(const label);
 
 
     // Member functions
@@ -70,14 +70,19 @@ public:
 
         //- scalar [0..1] (so including 0,1)
         scalar scalar01();
+
         //- vector with every component scalar01
         vector vector01();
+
         //- sphericalTensor with every component scalar01
         sphericalTensor sphericalTensor01();
+
         //- symmTensor with every component scalar01
         symmTensor symmTensor01();
+
         //- tensor with every component scalar01
         tensor tensor01();
+
         //- label [lower..upper]
         label integer(const label lower, const label upper);
 
diff --git a/src/conversion/ensight/file/ensightFile.C b/src/conversion/ensight/file/ensightFile.C
index 8cb28f8c5e..095d2659f8 100644
--- a/src/conversion/ensight/file/ensightFile.C
+++ b/src/conversion/ensight/file/ensightFile.C
@@ -74,7 +74,7 @@ bool Foam::ensightFile::allowUndef(bool value)
 }
 
 
-Foam::scalar Foam::ensightFile::undefValue(const scalar& value)
+Foam::scalar Foam::ensightFile::undefValue(const scalar value)
 {
     // enable its use too
     allowUndef_ = true;
@@ -133,7 +133,7 @@ Foam::Ostream& Foam::ensightFile::write(const string& value)
 }
 
 
-Foam::Ostream& Foam::ensightFile::write(const label& value)
+Foam::Ostream& Foam::ensightFile::write(const label value)
 {
     if (format() == IOstream::BINARY)
     {
@@ -157,7 +157,7 @@ Foam::Ostream& Foam::ensightFile::write(const label& value)
 
 Foam::Ostream& Foam::ensightFile::write
 (
-    const label& value,
+    const label value,
     const label fieldWidth
 )
 {
@@ -181,7 +181,7 @@ Foam::Ostream& Foam::ensightFile::write
 }
 
 
-Foam::Ostream& Foam::ensightFile::write(const scalar& value)
+Foam::Ostream& Foam::ensightFile::write(const scalar value)
 {
     if (format() == IOstream::BINARY)
     {
diff --git a/src/conversion/ensight/file/ensightFile.H b/src/conversion/ensight/file/ensightFile.H
index 1fa91f8561..ca62114160 100644
--- a/src/conversion/ensight/file/ensightFile.H
+++ b/src/conversion/ensight/file/ensightFile.H
@@ -103,7 +103,7 @@ public:
         //- Assign the value to represent undef in the results
         //  Returns the previous value
         //  NB: do not use values larger than floatScalarVGREAT
-        static scalar undefValue(const scalar&);
+        static scalar undefValue(const scalar);
 
 
     // Output
@@ -124,13 +124,13 @@ public:
         Ostream& write(const string& value);
 
         //- write integer as "%10d" or as binary
-        Ostream& write(const label& value);
+        Ostream& write(const label value);
 
         //- write integer with specified width or as binary
-        Ostream& write(const label& value, const label fieldWidth);
+        Ostream& write(const label value, const label fieldWidth);
 
         //- write float as "%12.5e" or as binary
-        Ostream& write(const scalar& value);
+        Ostream& write(const scalar value);
 
         //- Add carriage return to ascii stream
         void newline();
diff --git a/src/conversion/meshTables/cellTable.C b/src/conversion/meshTables/cellTable.C
index 6369f98d9d..a07cbaf96d 100644
--- a/src/conversion/meshTables/cellTable.C
+++ b/src/conversion/meshTables/cellTable.C
@@ -22,8 +22,6 @@ License
     along with OpenFOAM; if not, write to the Free Software Foundation,
     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
-Description
-
 \*---------------------------------------------------------------------------*/
 
 #include "cellTable.H"
@@ -81,7 +79,7 @@ void Foam::cellTable::addDefaults()
 
 void Foam::cellTable::setEntry
 (
-    const label& id,
+    const label id,
     const word& keyWord,
     const word& value
 )
@@ -192,7 +190,7 @@ Foam::Map<Foam::word> Foam::cellTable::names
 }
 
 
-Foam::word Foam::cellTable::name(const label& id) const
+Foam::word Foam::cellTable::name(const label id) const
 {
     word theName("cellTable_" + Foam::name(id));
 
@@ -289,19 +287,19 @@ Foam::Map<Foam::word> Foam::cellTable::shells() const
 
 
 
-void Foam::cellTable::setMaterial(const label& id, const word& matlType)
+void Foam::cellTable::setMaterial(const label id, const word& matlType)
 {
     setEntry(id, "MaterialType", matlType);
 }
 
 
-void Foam::cellTable::setName(const label& id, const word& name)
+void Foam::cellTable::setName(const label id, const word& name)
 {
     setEntry(id, "Label", name);
 }
 
 
-void Foam::cellTable::setName(const label& id)
+void Foam::cellTable::setName(const label id)
 {
     iterator iter = find(id);
 
diff --git a/src/conversion/meshTables/cellTable.H b/src/conversion/meshTables/cellTable.H
index 4d0079f032..ff8c1fafb6 100644
--- a/src/conversion/meshTables/cellTable.H
+++ b/src/conversion/meshTables/cellTable.H
@@ -96,7 +96,7 @@ class cellTable
         //- Add required entries - MaterialType
         void addDefaults();
 
-        void setEntry(const label& id, const word& keyWord, const word& value);
+        void setEntry(const label id, const word& keyWord, const word& value);
 
         //- Disallow default bitwise copy construct
         cellTable(const cellTable&);
@@ -133,7 +133,7 @@ public:
 
         //- Return the name corresponding to id
         //  returns cellTable_ID if not otherwise defined
-        word name(const label& id) const;
+        word name(const label id) const;
 
         //- Return a Map of (id => name)
         Map<word> names() const;
@@ -157,13 +157,13 @@ public:
         Map<word> materialTypes() const;
 
         //- Assign material Type
-        void setMaterial(const label&, const word&);
+        void setMaterial(const label, const word&);
 
         //- Assign name
-        void setName(const label&, const word&);
+        void setName(const label, const word&);
 
         //- Assign default name if not already set
-        void setName(const label&);
+        void setName(const label);
 
         //- Read constant/cellTable
         void readDict
diff --git a/src/dynamicMesh/polyMeshAdder/faceCoupleInfo.C b/src/dynamicMesh/polyMeshAdder/faceCoupleInfo.C
index 7820bcd70b..2be5111187 100644
--- a/src/dynamicMesh/polyMeshAdder/faceCoupleInfo.C
+++ b/src/dynamicMesh/polyMeshAdder/faceCoupleInfo.C
@@ -1536,7 +1536,7 @@ void Foam::faceCoupleInfo::perfectPointMatch
         FatalErrorIn
         (
             "faceCoupleInfo::perfectPointMatch"
-            "(const scalar&, const bool)"
+            "(const scalar, const bool)"
         )   << "Did not match all of the master faces to the slave faces"
             << endl
             << "This usually means that the slave patch and master patch"
diff --git a/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8.C b/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8.C
index 926f2f4913..f338c6cf06 100644
--- a/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8.C
+++ b/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8.C
@@ -55,7 +55,7 @@ namespace Foam
     class ifEqEqOp
     {
         public:
-        void operator()(label& x, const label& y) const
+        void operator()(label x, const label y) const
         {
             x = (x==y) ? x : value;
         }
diff --git a/src/mesh/blockMesh/curvedEdges/spline.C b/src/mesh/blockMesh/curvedEdges/spline.C
index 871c7f7db4..e95d5a9f36 100644
--- a/src/mesh/blockMesh/curvedEdges/spline.C
+++ b/src/mesh/blockMesh/curvedEdges/spline.C
@@ -36,7 +36,7 @@ Foam::spline::spline(const pointField& knotPoints)
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-Foam::scalar Foam::spline::B(const scalar& tau) const
+Foam::scalar Foam::spline::B(const scalar tau) const
 {
     if (tau <= -2.0 || tau >= 2.0)
     {
@@ -60,7 +60,7 @@ Foam::scalar Foam::spline::B(const scalar& tau) const
     }
     else
     {
-        FatalErrorIn("spline::B(const scalar&)")
+        FatalErrorIn("spline::B(const scalar)")
             << "Programming error???, "
             << "tau = " << tau
             << abort(FatalError);
diff --git a/src/mesh/blockMesh/curvedEdges/spline.H b/src/mesh/blockMesh/curvedEdges/spline.H
index 5808770682..243ed35690 100644
--- a/src/mesh/blockMesh/curvedEdges/spline.H
+++ b/src/mesh/blockMesh/curvedEdges/spline.H
@@ -59,7 +59,7 @@ class spline
     // Private Member Functions
 
         //- Blending function for constructing spline
-        scalar B(const scalar&) const;
+        scalar B(const scalar) const;
 
         //- Disallow default bitwise copy construct
         spline(const spline&);
diff --git a/src/meshTools/octree/treeBoundBox.H b/src/meshTools/octree/treeBoundBox.H
index 69791e04a8..04b420a531 100644
--- a/src/meshTools/octree/treeBoundBox.H
+++ b/src/meshTools/octree/treeBoundBox.H
@@ -158,10 +158,6 @@ public:
         static const FixedList<vector, 6> faceNormals;
 
 
-        //- Face on which neighbour is
-        static direction neighbourFaceBits(const label&);
-
-
     // Constructors
 
         //- Construct null setting points to zero
diff --git a/src/surfMesh/MeshedSurface/MeshedSurface.C b/src/surfMesh/MeshedSurface/MeshedSurface.C
index 8bcab42089..1c1622c0eb 100644
--- a/src/surfMesh/MeshedSurface/MeshedSurface.C
+++ b/src/surfMesh/MeshedSurface/MeshedSurface.C
@@ -507,7 +507,7 @@ void Foam::MeshedSurface<Face>::movePoints(const pointField& newPoints)
 
 
 template<class Face>
-void Foam::MeshedSurface<Face>::scalePoints(const scalar& scaleFactor)
+void Foam::MeshedSurface<Face>::scalePoints(const scalar scaleFactor)
 {
     // avoid bad scaling
     if (scaleFactor > 0 && scaleFactor != 1.0)
diff --git a/src/surfMesh/MeshedSurface/MeshedSurface.H b/src/surfMesh/MeshedSurface/MeshedSurface.H
index 5677233e0b..ea7125fa83 100644
--- a/src/surfMesh/MeshedSurface/MeshedSurface.H
+++ b/src/surfMesh/MeshedSurface/MeshedSurface.H
@@ -338,7 +338,7 @@ public:
         virtual void movePoints(const pointField&);
 
         //- Scale points. A non-positive factor is ignored
-        virtual void scalePoints(const scalar&);
+        virtual void scalePoints(const scalar);
 
         //- Reset primitive data (points, faces and zones)
         //  Note, optimized to avoid overwriting data (with Xfer::null)
diff --git a/src/triSurface/triSurface/triSurface.C b/src/triSurface/triSurface/triSurface.C
index 3b8d2f9d5f..65258557e8 100644
--- a/src/triSurface/triSurface/triSurface.C
+++ b/src/triSurface/triSurface/triSurface.C
@@ -33,8 +33,6 @@ License
 #include "SortableList.H"
 #include "PackedBoolList.H"
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 namespace Foam
 {
@@ -783,7 +781,6 @@ const Foam::labelList& Foam::triSurface::edgeOwner() const
 }
 
 
-//- Move points
 void Foam::triSurface::movePoints(const pointField& newPoints)
 {
     // Remove all geometry dependent data
@@ -797,8 +794,7 @@ void Foam::triSurface::movePoints(const pointField& newPoints)
 }
 
 
-// scale points
-void Foam::triSurface::scalePoints(const scalar& scaleFactor)
+void Foam::triSurface::scalePoints(const scalar scaleFactor)
 {
     // avoid bad scaling
     if (scaleFactor > 0 && scaleFactor != 1.0)
diff --git a/src/triSurface/triSurface/triSurface.H b/src/triSurface/triSurface/triSurface.H
index 9ee5b5ca4d..7ef87db1ab 100644
--- a/src/triSurface/triSurface/triSurface.H
+++ b/src/triSurface/triSurface/triSurface.H
@@ -324,7 +324,7 @@ public:
             virtual void movePoints(const pointField&);
 
             //- Scale points. A non-positive factor is ignored
-            virtual void scalePoints(const scalar&);
+            virtual void scalePoints(const scalar);
 
             //- Check/remove duplicate/degenerate triangles
             void checkTriangles(const bool verbose);