INDEX 



AMPHIOXUS : Segmentation of ovum, 5 ; 

 development of body-cavity, 8 ; in- 

 tegument, 17; notochord, 47 ; branchial 

 skeleton, 84 ; lateral or metapleural 

 folds, 137 ; muscles, 179 ; central 

 nervous system, 195,204; nerves, 233; 

 sense-organs, 250, 259; "eyes, "277; 

 oral hood and mouth, 312 ; endostyle, 

 331 ; alimentary canal, 335 ; histology 

 of mucous membrane, 344 ; liver, 34(3 ; 

 gills, 352; blood-vessels and corpuscles, 

 393, 414, 419; urinary organs, 452; 

 genital organs, 463 



CYCLOSTOMES : Segmentation of ovum, 

 5; integument, 18; vertebral column, 

 48; skull and branchial skeleton, 84; 

 median fins, 136 ; muscles, 179, 187 ; 

 brain-membranes, 195 ; spinal cord, 

 198 ; brain, 204 ; spinal nerves, 233 ; 

 cerebral nerves, 234 ; sympathetic, 

 248 ; sense-organs of the integument, 

 250 ; olfactory organ, 259 ; eye, 278 ; 

 retina, 284 ; auditory organ, 295 ; 

 oral hood and mouth, 312 ; horny teeth, 

 315 ; tongue, 327 ; thyroid, 332 ; ali- 

 mentary canal, 335 ; histology of 

 mucous membrane, 344 ; liver, 346 ; 

 pancreas, 348 ; gills, 352'; genital pores, 

 389 ; blood corpuscles, 394 ; heart and 

 main vessels, 400; arteries,414 ; veins, 

 419 ; urinary organs, 452 ; genital 

 organs, 463 ; adrenal bodies, 493 



FISHES : Segmentation of ovum, 5 ; in- 

 tegument, 18 ; exoskeleton, 39 ; ver- 

 tebral column, 48 ; ribs, 63 ; skull and 

 visceral arches, 87 ; unpaired fins, 136 ; 

 paired fins, 137 ; pectoral arch, 140 ; 

 pelvic arch, 145; paired fins, 155; 

 parietal muscles, 179 ; muscles of the 

 appendages, 185 ; visceral muscles, 

 187 ; electric organs, 190 ; brain mem- 

 branes, 195 ; spinal cord, 198 ; brain, 

 208 ; spinal nerves, 233 ; cerebral nerves, 

 234 ; sympathetic, 248 ; sense-organs 

 of the integument, 250; olfactory or- 

 gan, 261 ; eye, 279 ; retina, 284 ; eye- 

 muscles and eyelids, 286, 287 ; auditory 

 organ, 295 ; relations of auditory organ 



with air-bladder, 297 ; teeth, 314 ; 

 tongue, 327 ; thyroid, 332 ; thymus, 

 333 ; alimentary canal, 335 ; histology 

 of mucous membrane, 344 ; liver, 346 ; 

 pancreas, 348 ; gills, 355 ; swim-bladder, 

 361 ; lungs, 377 ; coelome, 388 ; ab- 

 dominal and genital pores, 390 ; blood- 

 corpuscles, 394 ; heart and main ves- 

 sels, 400 ; arteries, 414 ; veins, 419 ; 

 retia mirabilia, 431 ; lymphatic system, 

 432; spleen, 435; nutrition of embryo, 

 436; urinary organs, 452; genital 

 organs, 463 ; claspers, 486 ; adrenal 

 bodies, 493 



AMPHIBIANS : Segmentation of ovum, 

 5 ; integument, 20 ; exoskeleton, 42 ; 

 vertebral column, 54 ; ribs, 66 ; sternum, 

 70 ; skull and visceral arches, 97 ; un- 

 paired fins, 137 ; pectoral arch, 141 ; 

 pelvic arch, 146 ; limbs, 161 ; in- 

 tegumentary muscles, 176 ; parietal 

 muscles, 181 ; muscles of the append- 

 ages, 185 ; visceral muscles, 188 ; brain- 

 membranes, 195 ; spinal cord, 198 ; 

 brain, 215 ; spinal nerves, 233 ; cere- 

 bral nerves, 234 ; sympathetic, 248 ; 

 sense-organs of the integument, 250 ; 

 tactile cells, 255 ; olfactory organ, 

 263 ; Jacobson's organ, 271 ; eye, 281 ; 

 retina, 284 ; eye-muscles and eyelids, 

 286, 287; glands of the eye, 288; 

 auditory organ, 297; teeth, 314; glands 

 of the mouth, 325 ; tongue, 328 ; 

 thyroid, 332; thymus, 333 ; alimentary 

 canal, 335 ; histology of mucous mem- 

 brane, 344 ; liver, 346 ; pancreas, 348 ; 

 gills, 358 ; air-tubes and larynx, 366 ; 

 lungs, 377 ; coelome, 388 ; blood cor- 

 puscles, 394 ; heart and main vessels, 

 403 ; arteries, 414 ; veins, 426 ; lym- 

 phatic system, 432 ; spleen, 435 ; nu- 

 trition of embryo, 437 ; urinary organs, 

 455; genital organs, 469; copula- 

 tory organs, 487 ; adrenal bodies, 495 



REPTILES : Segmentation of ovum, 5 ; 

 amnion, 9 ; integument, 23 ; exo- 

 skeleton, 42 ; vertebral column, 57 ; 

 ribs, 67 ; sternum, 72 ; episternum, 



