CONTENTS ix 



i' \<.i<: 



MUSCLES (IF THE APPENDAGES 185 



BYE-MUSCLES . . 186 



VISCERAL MUSCLES .... 187 



<>f Fishes .... ... 187 



of Amphibians 188 



of Amniota 189 



D. ELECTRIC ORGANS ... . . 190 



E. NERVOUS SYSTEM AND SENSORY ORGANS . . 193 



T. CENTRAL NERVOUS SYSTEM . . ... 195 



Membranes of the brain and spinal cord 195 



1. SPINAL CORD . . 198 



2. BRAIN (general description and development) 199 



of Cyclostomes 204 



of Elasmobranehs . 208 



of Ganoids ... 211 



ofTeleosts 211 



of Dipnoans 214 



of Amphibians .... 215 



of Reptiles ... 220 



of Birds .221 



of Mammals 225 



II. PERIPHERAL NERVOUS SYSTEM . . 230 



1. SPINAL NERVES .... 233 



2. CEREBRAL NERVES . 234 



Sympathetic 247 



III. SENSORY ORGANS (general description and development) . 249 



SENSE-ORGANS OF THE INTEGUMENT 250 



<(. Nerve-Eminences 250 



I. End-buds and gustatory organs . . 254 



c. Tactile Cells and Corpuscles 255 



'/. Club-shaped or lamellar Corpuscles 257 



OLFACTORY ORGAN (general description and development) . . 258 



of Cyclostomes 259 



of Fishes .... . . 261 



of Amphibians ... ... 263 



of Reptiles . . 265 



of Birds .... ... 266 



of Mammals 267 



Vomero-nasal (Jacobson's) Organ 271 



EYE (general description and development) .... . 273 



of Amphioxus ... 277 



of Cyclostomes .... 278 



of Fishes . 279 



