Tiii TABLE OF CONTENTS. 



CHAPTER FOURTH. 



Oy INTELLIGENCE AND INSTINCT 



Perception 8 ' 



CHAPTER FIFTH. 



OF MOTION 91 



SECTION I. 



Apparatus of Motion 91 



Voluntary and Involuntary Muscles, 92 Microscopic Anatomy 

 of Muscular Fibre, 90 94 Ciliary Motions, 95 Skeleton of 

 Polyps, 100 EchinidiE, 101 Asteriadae, 102 Crinoideae, 103 

 Mollusca, 104 Articulata, 105 Vertebrata, 106. 



SECTION II. 



Organs of Locomotion 109 



Skeleton of Man, 111 Composition of the Bones in Fishes, 113 

 Reptiles, 113 Birds, 113 Mammals, 11 3 Analysis of Bones, 

 114 Microscopic Structure of Bones, 115 The Head, 116 

 The Orbits, 123 The Trunk, 126 The Cervical Vertebra?, 127 

 The Dorsal Vertebra, 129 The Lumbar Vertebras, 130 

 The Sacrum, 131 The Coccyx, 131 The Vertebras, 131 

 Comparative Table of the number of the Vertebras, 134 

 The Thorax, 135- The Pelvic Arch, 136 The Thigh, 138 

 The Leg, 139 The Foot, 139 The Tarsus, 140 The Meta- 

 tarsus, 140 Toes, 140 The Scapular arch, 141 The Scapula* 

 142 The Clavicle, 143 The Humerus, 143 The Hand, 146 

 The Carpus, 146 The Metacarpus, 146 The Phalanges, 

 147 1. Plan of the Organs of Locomotion in the Vertebrata, 

 1482. Of Standing, and the Modes of Progression, 152 

 Walking, 154 Running, 155 Leaping, 155 Climbing, 155 

 Flight, 156 Swimming, 157. 



CHAPTER SIXTH. 

 NUTRITION 159 



SECTION I. 



Of Digestion 160 



The Polypifera, 160 The Infusoria, 161 The Acalephae, 162 

 The Ediinoderms, 163 The Bryozooan Polypifera, 165 The 

 Tunicated Mollusca, 166 The Conchifera, 166 The Gastero- 

 poda, 167- The Cephalopoda, 171 The Annelida, 172 The 

 Crustacea, 173 The Arachnida, 174 Insects, 174 The Ver- 

 tebrata, 178 Organs of Mastication, 185 Insalivation, 191 

 Prehension, 193. 



