CONTENTS. 13 



PAGE 



The Superficial Gray Matter 615 



The Intermediate Gray Matter of the Crural System 615 



Other Collections of Gray Matter 625 



The Arrangement of the Fibres of the Brain 627 



Longitudinal Fibres of the Pedal System 628 



Longitudinal Fibres of the Tegmental System 631 



Transverse or so-called Commissural Fibres ... 634 



Summary . 635 



On the Phenomena Exhibited by an Animal Deprived of its Cerebral Hemispheres . 637 



The Machinery of Coordinated Movements . 643 



On Some Histological Features of the Brain 652 



The Superficial Gray Matter of the Cerebellum 653 



The Cerebral Cortex 655 



On Voluntary Movements ....... 661 



On the Development within the Central Nervous System of Visual and of some 



Other Sensations : Visual Sensations 689 



Sensations of Smell 700 



Sensations of Taste 701 



Sensations of Hearing 701 



On the Development of Cutaneous and Some Other Sensations 703 



Some Other Aspects of the Functions of the Brain 716 



On the Time Taken up by Cerebral Operations 724 



The Lymphatic Arrangements of the Brain and Spinal Cord 728 



The Vascular Arrangements of the Brain and Spinal Cord 732 



CHAPTER III. 



SIGHT. 



The Eye 738 



Dioptric Mechanisms: The Formation of the Image . . 744 



Accommodation 745 



Imperfections of the Dioptric Apparatus 757 



Visual Sensations 759 



The Origin of Visual Impulses 760 



Simple Sensations 766 



Color Sensations 769 



Visual Perceptions 



Modified Perceptions 



Binocular Vision : Corresponding or Identical Points 781 



Movements of the Eyeballs 782 



The Horopter 786 



Visual Judgments 786 



The Protected Mechanisms of the Eye 789 



CHAPTER IV. 

 HEARING, SMELL, AND TASTE. 



Hearing : The Ear 790 



The Acoustic Apparatus 798 



