In the clutch of the enemy--(_The Graphic_).
The three orders of lever--(_Bishop_), 19, 20
The skeleton of a Deer--(_Pander and D’Alton_), 21
Muscular cycle in the act of flexing the arm, 25
Screws formed by the bones of the wing of the bird, the bones of the anterior extremity of the Elephant, and the cast of the interior of the left ventricle of the heart, 28
The muscular system of the Horse--(_Bagg_), 30
The feet of the Deer, Ornithorhynchus, Otter, Frog, and Seal, 34
Chillingham Bull with extremities describing figure-of-8 movements, 37
Double waved tracks described by Man in walking, 39
Footprints of the Horse in the walk, trot, and gallop-- (_Gamgee_), 43
The positions assumed by the extremities and feet in walking-- (_Weber_), 59
Swimming of the fish according to Borelli, 67
Swimming of the fish according to the Author, 68
The skeleton of the Dugong--(_Dallas_), 74
The elliptical, looped, and spiral tracks made in swimming, 81
The several attitudes assumed by the extremities in swimming in the prone position, 82
The feet of the Swan as seen in the open and closed condition, 96
The foot of the Grebe with swimming membrane--(_Dallas_), 97
Double waved track described by the feet of swimming birds, 97
Figure-of-8 vertical track made by the wing in flight, 107
Diagram illustrating how wings obtain their high speed, 120
Partridge with small wings; Heron with large wings, 126
The wings of the Hawk and Albatross, 136, 137
The Green Plover with one wing flexed and the other extended, 138
Blur or impression produced on the eye by the rapidly oscillating wing of the insect, 139
Diagram in which the down and up strokes of the wing of the insect are analysed, 141
Diagrams illustrating the looped and waved tracks described by the wing of the insect, bat, and bird, 144
Figures showing the positions assumed by the wing of the bird during the up and down strokes (side view), 145
The positions assumed by the wing of the insect as it hastens to and fro and describes a figure-of-8 track, 147
The figure-of-8 curves made by the wing of the bird in flexion and extension, 147
The waved tracks described by the wing and body of the bird as they alternately rise and fall, 157, 163
The positions assumed by the wing of the bird during the down and up strokes (front view), 158