CONTENTS xiii 



PAGE 



MUSCLES OF THE TKUNK [continued)— 



of Birds . , 140 



of Mammals 140 



MUSCLES OF THE DIAPHRAGM . . 141 



MUSCLES OF THE APPENDAGES . . 142 



BYE-MUSCLES . . I40 



VISCERAL MUSCLES . . 142 



of Fishes . . 142 



of Amphibia I43 



of Amniota . . . I44 



D. ELECTRIC ORGANS . . ... 146 



E. NERVOUS SYSTEM AND SENSORY ORGANS 149 



I. CENTKAL NERVOUS SYSTEM .... .149 



MEMBRANES OF THE BRAIN AND SPINAL CORD 151 



1. SPINAL CORD ... . 152 



2. BRAIN (general description and development) . 15.3 



of Cyclostomi . . . 157 



of Elasmobranchii and Holocephali 159 



of Ganoidei . , .162 



of Teleostei 162 



of Dipnoi . 165 



of Amphibia . 166 



of Reptiles . 167 



of Birds . 172 



of Mammals ... .172 



II. PERIPHERAL NERVOUS SYSTEM 177 



1. SPINAL NERVES . . 179 



2. CEREBRAL NERVES . . ISO 



Sympathetic . . ... . .188 



III. SENSORY ORGANS (general description and development) . 189 



SENSE-ORGANS OF THE INTEGUMENT . . . . . . 190 



a. Nerve-Eminences . .... . . . . 190 



6. End-Buds . 19.3 



I . Tactile Cells and Corpuscles . . . 193 



d. Club-shaped Corpuscles . . 195 



OLFACTORY ORGAN (general description and development) .... 196 



of Cyclostomes . . . . . .197 



of Fishes . . ... 198 



of Dipnoans . . . . ... 199 



of Amphibians . . .... 2UiJ 



of Reptiles . . . .201 



of Birds . . . ... 2U2 



of Mammals . ... 2U3 



Jacobson's Organ .... 2iJ5 



