TABLE OF CONTENTS. 



INTRODUCTION xix 



CHAPTER FIRST. 



THE SPHERE AND FUNDAMENTAL PRINCIPLES OF ZOOLOGY . 1 



CHAPTER SECOND. 



GENERAL PROPERTIES OF ORGANIZED BODIES ... 9 



SECTION I. 

 Organized and Unorganized Bodies . . . 9 



SECTION II. 

 Elementary Structure of Organized Bodies . 1C 



SECTION III. 

 Differences between Animals and Plants .... .20 



CHAPTER THIRD 



ORGANS AND FUNCTIONS OF ANIMAL LIFE 28 



SECTION I. 



Of the Nervous System and General Sensation . . . .28 



Structure of the primary Fibres of Nerves, 29 Termination 

 of the primary Fibres, 34 The Cerebro- spinal system of Man 

 The Cerebrum, 40 The Cerebellum, 41 The Optic Lobes, 42 

 The Spinal Cord, 42 Nervous system of Fishes, 44 Amphibia, 

 45 Scaly Reptiles, 45 Birds, 45 Mammalia, 46 Cerebrm 

 Nerves, 49 Nervous system of Articulata, 54 Couchifera, 55 

 Gasteropoda, 55 Cephalopoda, 56 Radiata, 57. 



SECTION II. 



Of the Special Senses 58 



1. Of Sight, 58 The Eye, 58 Dioptrics of the Human Eye, 60 

 2. Of Hearing, 70 Comparative Anatomy of the Organ of 

 Hearing, 70803. Of Smell, 80 The Nose, 804 Of Taste, 

 815. Of Touch, 826. The Voice, 83. 



