CONTENTS. xi 



PAGE 



786. The visual field and field of sight of one eye and of both eyes . . 1273 



787. Corresponding or Identical Points 1275 



788. The movements of the eye-ball ; the primary position and secondary 



positions ; the kind of movements which are possible . . . 1277 



789. Listing's Law ; the experimental proof 1279 



790. The muscles of the eye-ball 1281 



791. The action of the ocular muscles 1283 



792. The nervous mechanism of the movements of the eye-balls ; the 



coordination of the movements 1286 



793. The nervous centres for the movements of the eye-balls . . . 1289 



794. The Horopter 1291 



SECTION XII. 

 ON SOME FEATURES OP VISUAL PERCEPTIONS AND ON VISUAL JUDGMENTS. 



795. On the differences between the objective field of sight and the 



subjective field of vision 1293 



796. The psychical processes belonging to visual perceptions ; illusions 



and visual judgments 1295 



797. Appreciation of apparent size 1296 



798. Judgment of distance and of actual size 1298 



799. The judgment of solidity 1300 



800. The struggle of the two fields of vision 1301 



SECTION XIII. 



THE NUTRITION OP THE EYE. 



801. The arrangement of the blood vessels 1303 



802. The vaso-rnotor changes in the eye 1304 



The Lymphatics of the Eye. 



803. The lymphatic vessels and lymph spaces of the eye .... 1304 

 804. The aqueous humour ; the changes taking place in it ; how effected 1306 

 805. The vitreous humour ; the changes taking place in it . . 1308 



SECTION XIV. 



THE PROTECTIVE MECHANISMS OP THE EYE. 



806. The eye-lids and their muscles 1310 



807. The conjunctiva and its glands. Tears. The secretion of tears . 1311 



