### Ellipse Fourth Method Case 1

Draftsman's fourth method for drawing an ellipse, case 1

### Ellipse Third Method

Draftsman's third method for drawing an ellipse

### Conjugate Diameters of an Ellipse

Illustration showing that if one diameter is conjugate to a second, the second is conjugate to the first.

### Construction of an Ellipse

Illustration of half of an ellipse and its auxiliary circle used to construct an ellipse by points,…

### Focal Radii of an Ellipse

Illustration of half of an ellipse. "If d denotes the abscissa of a point of an ellipse, r and r' its…

### Line Bisecting Angle Between Focal Radii on Ellipse

Illustration of half of an ellipse. "If through a point P of an ellipse a line is drawn bisecting the…

### Ordinate and Major Axis of Ellipse

Illustration of half of an ellipse. The square of the ordinate of a point in an ellipse is to the product…

### Parallel Tangents to an Ellipse

Illustration showing that tangents drawn at the ends of any diameter are parallel to each other.

### Point Distances to Foci on Ellipse

Illustration of half of an ellipse. "The sum of the distances of any point from the foci of an ellipse…

### Tangent From External Point to an Ellipse

Illustration of how to draw a tangent to an ellipse from an external point.

### Tangent to an Ellipse

Diagram an ellipse with a tangent line that illustrates "A line through a point on the ellipse and bisecting…

### Tangents to an Ellipse

Illustration showing the tangents drawn at two corresponding points of an ellipse and its auxiliary…

### Construction Of An Equilateral Triangle Inscribed In A Circle

An illustration showing how to construct an equilateral triangle inscribed in a circle. "With the radius…

### Forearm Bones

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

### Forearm Bones

Transverse section through the bones of the forearm (radius and ulna), taken at about the middle of…

### Back View of the Bones of the Forearm

Front view of the bones of the forearm

### Bones and Ligaments of Forearm

Bones of the right forearm,with their ligaments; volar aspect.

### Cross Section One Inch above the Styloid Process of the Forearm

Section one inch above the styloid process of the right radius.

### Cross Section Three Inches above the Styloid Process of the Forearm

Section three inches above the styloid process of the right radius.

### Cross Section Through the Styloid Process of the Forearm

Section through the styloid process of the right radius.

### Cross Section Two Inches above the Styloid Process of the Forearm

Section two inches above the styloid process of the right radius.

### Dorsal View of the Bones of the Forearm

The bones of the right forearm, dorsal view.

### Front View of the Bones of the Forearm

Front view of the bones of the forearm

### Muscles and Nerves of the Forearm

The muscles and nerves on the front of the forearm and hand. The pronator radii teres, flexor carpi…

### Section Across Forearm

Section across the forearm in the middle third. Labels: A, pronator radii teres; B, flexor carpi radialis;…

### Forearm, Section of

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones,…

### Ventral View of the Bones of the Forearm

The bones of the right forearm, ventral view.

### Geometry

Two students drawing geometrical shapes on the chalkboard. A student is also using a scale while students…

### Guiding Needle Point of Compass to Little Finger

The little finger on the left hand can guide the needle point of the compass to the center.

### Hand Ligaments

A anterior view of the ligaments of the wrist and hand.

### Hand Ligaments

A posterior view of the ligaments of the wrist and hand.

### Construction Of A Hexagon In A Circle

An illustration showing how to construct a hexagon in a given circle. "The radius of the circle is equal…

### Tangent to a Hyperbola

Diagram part of a hyperbola with a tangent line that illustrates "A line through a point on the hyperbola…

### Elbow Joint

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments…

### Left Scaphoid

A view of the left scaphoid seen from behind.

### Left Scaphoid

A view of the left scaphoid seen from in front.

### Left Semilunar

A view of the left semilunar from the external surface.

### Noctule Bat

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first…

### Construction Of A Pentagon Inscribed In A Circle

An illustration showing how to construct a pentagon inscribed in a circle. "Draw the diameter AB, and…

### Construction Of A Pentagon On A Line

An illustration showing how to construct a pentagon on a given line. "From B erect BC perpendicular…

### Regular Pentagon With Circle Inscribed

Illustration showing a circle inscribed in a regular pentagon. Or, a regular pentagon circumscribed…

### Circle With 2 Perpendicular Diameters

Illustration of a circle with center O and diameters AB and CD perpendicular to each other.

### Construction of Radii of a Circle

Illustration used to draw lines which are radii of a circle where the center is inaccessible.

The plan of development of the radius for three centuries.

The radial bone in the human arm.

Anterior view of radius (bone of the arm) of the right side. Labels: 1, cylindrical head; 2, surface…

The radius, a bone of the arm.

### Radius and Ulna

An anterior view of the radius and ulna.

### Radius and Ulna

A posterior view of the radius and ulna.

### Radius from Before

Right radius from before.

### Radius from Behind

Right radius from behind.

"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to…

### Carpal Articular Surface of the Radius

Carpal articular surface of the radius, and triangular fibro cartilage of the wrist.

### Colle's Fraction of the Radius

Showing the situation of Colle's fracture of the radius, with fracture of the styloid of the ulna. The…

Fracture of the shaft of the radius.

Fracture of the lower end of the radius.

### Inner Aspect of Radius

Right radius, inner aspect.

### Orbicular Ligament of the Radius

Orbicular ligament of the radius.

### Ring Made of Concentric Circles

Illustration of ring (small circle in larger concentric circle).

### Ring With Piece Cut Out

Illustration of ring (small circle in larger concentric circle) with piece cut out.