LIST OF FIGURES. xlvii 



FIG. PAGE 



119. Diagram shewing the variations in the sectional area of the anterior 



columns of the spinal cord, along its length 694 



120. Diagram shewing the variations in the sectional area of the posterior 



columns of the spinal cord, along its length 694 



121. The areas of the cerebral convolutions of the dog .... 741 



122. Outline of brain of monkey to shew the principal sulci and gyri . 744 



123. Left hemisphere of the brain of monkey viewed from the left side and 



from above 745 



124. Mesial aspect of the left half of the brain of monkey .... 747 



125. Outline of horizontal section of brain, to shew the internal capsule . 750 



126. Outline of a sagittal section through the hemisphere .... 751 



127. Outline of a transverse dorso-ventral section of the right half of the 



brain 752 



128. Transverse dorso-ventral section through the crus and anterior corpora 



quadrigemina 753 



129. Transverse dorso-ventral section through the fore part of the pons . 754 



130. Transverse dorso-ventral section through the pons at the exit of the 



fifth nerve 755 



131. Transverse dorsal section through the bulb at the widest part of the 



fourth ventricle 756 



132. Transverse dorso-ventral section through the bulb just behind the pons 757 



133. Diagram to illustrate the relative size of the pyramidal tract in man, 



monkey and dog 761 



134. Diagram of the convolutions and fissures on the lateral surface of the 



right cerebral hemisphere of man 767 



135. The same on the mesial surface 767 



136. The right lateral aspect of the cerebrum of man in outline, to illus- 



trate the cortical areas 76& 



137. Mesial surface of the right cerebral hemisphere of man in outline, to 



illustrate the cortical areas 768 



138. Diagram to illustrate the nervous apparatus of vision in man . . 783 



139. Diagrammatic outline of a horizontal section of the eye, to illustrate 



the relations of the various parts ....... 836 



140. Diagram of simple optical system ....... 840 



141. Diagram of the schematic or diagrammatic eye .... 843 



142. Diagram of the formation of a retinal image . . . . 844 



143. Diagram of Scheiner's experiment 848 



144. Diagram of images reflected from the eye 852 



145. Diagram of the ciliary muscle as seen in a vertical radial section of 



the ciliary region .......... 855 



146. Diagram to illustrate accommodation ...... 856 



147. Diagrammatic representation of the nerves governing the pupil . 859 



148. Diagram illustrating chromatic aberration 873 



149. Diagram to illustrate entoptical images 876 



150. Diagram of three primary colour sensations ..... 899 



151. Diagram to illustrate Hering's theory of colour vision . . . 902 



152. Diagram illustrating the formation of Purkinje's figures when the 



illumination is directed through the sclerotic . . . ' . 918 



153. Diagram illustrating the formation of Purkinje's figures when the 



illumination is directed through the cornea 919 



