diff --git a/src/math/Box2.js b/src/math/Box2.js
index 0f4eedc2b8860dc141ce8dac066e65bb2c7b792d..3b3fd64860be7a02021df1523b345fb839845afc 100644
--- a/src/math/Box2.js
+++ b/src/math/Box2.js
@@ -115,12 +115,6 @@ THREE.Box2.prototype = {
 
 	},
 
-	volume: function () {
-
-		return ( this.max.x - this.min.x ) * ( this.max.y - this.min.y );
-
-	},
-
 	center: function () {
 
 		return new THREE.Vector2().add( this.min, this.max ).multiplyScalar( 0.5 );
diff --git a/src/math/Box3.js b/src/math/Box3.js
index 7de0b325edde8db44da995c4df4a85c76a5eeb4d..86edda579a2117c0c5851b4f7fca699be1536a0c 100644
--- a/src/math/Box3.js
+++ b/src/math/Box3.js
@@ -133,12 +133,6 @@ THREE.Box3.prototype = {
 
 	},
 
-	volume: function () {
-
-		return ( this.max.x - this.min.x ) * ( this.max.y - this.min.y ) * ( this.max.z - this.min.z );
-
-	},
-
 	center: function () {
 
 		return new THREE.Vector3().add( this.min, this.max ).multiplyScalar( 0.5 );
diff --git a/src/math/Plane.js b/src/math/Plane.js
index 96fdb76425f7b62743d0923d8a3e0f7e7225e7d4..fc27af247ea71cb577c06ac07e5b67793c91585e 100644
--- a/src/math/Plane.js
+++ b/src/math/Plane.js
@@ -71,14 +71,6 @@ THREE.Plane.prototype = {
 
 	},
 
-	flip: function () {
-
-		this.normal.negate();
-
-		return this;
-
-	},
-
 	normalize: function () {
 
 		// Note: will lead to a divide by zero if the plane is invalid.
diff --git a/src/math/Ray.js b/src/math/Ray.js
index ce0a8f5e34141ad62c29958b9723f3ef9ac9156a..0e2f4c2f22aaf9acb11fa89981ad6c399625a722 100644
--- a/src/math/Ray.js
+++ b/src/math/Ray.js
@@ -46,19 +46,6 @@ THREE.Ray.prototype = {
 
 	},
 
-	recast: function ( t ) {
-
-		return this.clone().recastSelf( t );
-
-	},
-
-	flip: function () {
-
-		this.direction.negate();
-
-		return this;
-	},
-
 	closestPointToPoint: function ( point ) {
 
 		var result = point.clone().subSelf( this.origin );
diff --git a/src/math/Sphere.js b/src/math/Sphere.js
index a2f0b2ca60a2ffe756d437712f24f18ca665052c..a907e47ec86998ad175b238eb72ca74cb8d71707 100644
--- a/src/math/Sphere.js
+++ b/src/math/Sphere.js
@@ -65,12 +65,6 @@ THREE.Sphere.prototype = {
 
 	},
 
-	volume: function () {
-
-		return Math.PI * 4 / 3 * ( this.radius * this.radius * this.radius );
-
-	},
-
 	containsPoint: function ( point ) {
 
 		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
diff --git a/test/core/Box2.js b/test/core/Box2.js
index 03141424c792213c332ca3ba7c9d2826564cf720..0782c3551cd421ef1215cc8f02afdeec70be3831 100644
--- a/test/core/Box2.js
+++ b/test/core/Box2.js
@@ -51,14 +51,6 @@ test( "empty/makeEmpty", function() {
 	ok( a.empty(), "Passed!" );
 });
 
-test( "volume", function() {
-	var a = new THREE.Box2( zero2, one2 );
-	ok( a.volume() == 1, "Passed!" );
-
-	a = new THREE.Box2( one2.clone().negate(), zero2 );
-	ok( a.volume() == 1, "Passed!" );
-});
-
 test( "center", function() {
 	var a = new THREE.Box2( zero2 );
 
diff --git a/test/core/Box3.js b/test/core/Box3.js
index 67d950364393772ebd09e5e8eae6d26e78449e89..99a00d74db8247444db3441bf801c9087224c624 100644
--- a/test/core/Box3.js
+++ b/test/core/Box3.js
@@ -51,11 +51,6 @@ test( "empty/makeEmpty", function() {
 	ok( a.empty(), "Passed!" );
 });
 
-test( "volume", function() {
-	var a = new THREE.Box3( zero3, one3 );
-	ok( a.volume() == 1, "Passed!" );
-});
-
 test( "center", function() {
 	var a = new THREE.Box3( zero3 );
 
diff --git a/test/core/Plane.js b/test/core/Plane.js
index 1a7eb526fb706a06a03c2d52d845079c635ecb74..1c11335d8335dfedb89e9ccc135011ff9395c00a 100644
--- a/test/core/Plane.js
+++ b/test/core/Plane.js
@@ -78,14 +78,6 @@ test( "setFromNormalAndCoplanarPoint", function() {
 	ok( a.constant == 0, "Passed!" );
 });
 
-test( "flip", function() {
-	var a = new THREE.Plane( one3, 0 );
-	
-	ok( a.normal.equals( one3 ), "Passed!" );
-	a.flip();
-	ok( a.normal.negate().equals( one3 ), "Passed!" );
-});
-
 test( "normalize", function() {
 	var a = new THREE.Plane( new THREE.Vector3( 2, 0, 0 ), 2 );
 	
diff --git a/test/core/Ray.js b/test/core/Ray.js
index 001dd074eac0240e19bdf6432db3ea4d40cc0b35..da07f234b00458d8cd269fa595f8f79da01931da 100644
--- a/test/core/Ray.js
+++ b/test/core/Ray.js
@@ -43,7 +43,7 @@ test( "at", function() {
 	ok( a.at( 1 ).equals( new THREE.Vector3( 1, 1, 2 ) ), "Passed!" );
 });
 
-test( "recast/recastSelf/clone", function() {
+test( "recastSelf/clone", function() {
 	var a = new THREE.Ray( one3, new THREE.Vector3( 0, 0, 1 ) );
 
 	ok( a.recastSelf( 0 ).equals( a ), "Passed!" );
@@ -55,25 +55,12 @@ test( "recast/recastSelf/clone", function() {
 	ok( c.recastSelf( 1 ).equals( new THREE.Ray( new THREE.Vector3( 1, 1, 2 ), new THREE.Vector3( 0, 0, 1 ) ) ), "Passed!" );
 
 	var d = a.clone();
-	var e = d.recast( 1 );
+	var e = d.clone().recastSelf( 1 );
 	ok( d.equals( a ), "Passed!" );
 	ok( ! e.equals( d ), "Passed!" );
 	ok( e.equals( c ), "Passed!" );
 });
 
-test( "flip", function() {
-	var a = new THREE.Ray( one3, new THREE.Vector3( 0, 0, 1 ) );
-
-	var b = a.clone();
-	b.flip();
-	ok( b.direction.equals( new THREE.Vector3( 0, 0, -1 ) ), "Passed!" );
-	ok( ! b.equals( a ), "Passed!" );
-
-	// and let's flip back to original direction
-	b.flip();
-	ok( b.equals( a ), "Passed!" );
-});
-
 test( "closestPointToPoint", function() {
 	var a = new THREE.Ray( one3, new THREE.Vector3( 0, 0, 1 ) );