LIST OF FIGURES IN PART IV. 



FIG. PAGE 



134. Diagrammatic Outline of a Horizontal Section of the Eye to illus- 



trate the Relations of the Various Parts 3 



135. Diagram of simple Optical System 7 



136. Diagram of the Schematic or Diagrammatic Eye 10 



137. Diagram of the Formation of a Retinal Image 11 



138. Diagram of Scheiner's Experiment 15 



139. Diagram of Images reflected from the Eye 19 



140. Diagram of the Ciliary Muscle as seen in a Vertical Radial Section 



of the Ciliary Region 27 



141. Diagram to illustrate Accommodation 32 



142. Diagrammatic representation of the Nerves governing the Pupil . 36 



143. Diagram illustrating Chromatic Aberration 50 



144. Diagram to illustrate Entoptical Images 52 



145. Diagram to illustrate the Structure of the Retina 60 



146. Diagram of three Primary Colour Sensations 92 



147. Diagram to illustrate Hering's Theory of Colour Vision .... 95 



148. Diagram illustrating the Formation of Purkinje's Figures when the 



Illumination is directed through the Sclerotic 112 



149. Diagram illustrating the Formation of Purkinje's Figures when the 



Illumination is directed through the Cornea 113 



150. Diagram to illustrate the Principles of a simple Form of Ophthalmo- 



scope 121 



151. Figure to illustrate Irradiation 126 



152. The Visual Field of the Right Eye 136 



153. The Visual Fields (Fields of Sight) of the two Eyes when the Eyes 



Converge to the same Fixed Point 137 



154. Diagram illustrating Corresponding Points 138 



155. Figure to illustrate the Insertions of the Ocular Muscles .... 144 



156. Diagram to illustrate the Actions of the Ocular Muscles .... 146 



157. Diagram illustrating a simple Horopter 153 



158. Figure to illustrate the Appreciation of Apparent Size .... 158 



159. The Same 159 



160. Figure to illustrate an Optical Effect produced by Parallel Slanting 



Lines . 159 



