INDEX 



615 



Hibernation, 8 



Higher (tripoblastic) animals, uni- 

 formity in general structure, 332 



Hind-brain, 202, 584 



Hind-limb or fin, see Append- 

 ages 



Hind-gut, 371 



Hinge of lamellibranchiate shell, 

 396, 398 



Hip-girdle, see Pelvic arch 



Hippocampus, 531 



Histological methods, 120, /J5, 

 603 



Histology, 104 



Holobranch, 448 



Holophytic nutrition, 247, 253 



Holozoic nutrition, 247, 253 



Homogenesis, 290 



Homology and homologous, 217, 



3i8 



Homology, serial, 39, 52, 327 



Host, 282, 284, 287 



Humerus, 48, 501 



Hybrids, 216 



HYDRA : occurrence and general 

 characters, 294 ; species, 296 ; 

 movements, 296 ; mode of feed- 

 ing, 297 ; microscopic structure, 

 297 ; digestion, 304 ; asexual, 

 artificial, and sexual reproduction, 

 306 ; development, 308 ; practi- 

 cal directions, 322 



Hydranth, 309 b. 



Hydroid polypes, 308 



Hydrotheca, 312 



Hydrozoa, 321 



Hyoid, 40, 44, 438, 496 



Hyomandibular, 438 



Hypobranchial groove, see Endo- 

 style 



Hypostome, 295, 309, 317 



Immortality, 236 



Impregnation, see Fertilization 



Incisors, 509 



Income and expenditure, 148, 236, 

 245 



Incubation, 604 



Incus, see Auditory ossicles 



Individual, 220, 277 



Individuation, 277, 306 



Infundibulum, of brain, 159, 459 ; 

 530, of lung, 518 



Infusoria. 261, 292 



Ingesta and egesta, balance of, 

 236 



Ingestion, 8, 233 



Inguinal canal, 538 



Injection of blood-vessels, 99, J<&? 5 

 414, 474, 477,543 



Innominate bone, 51, 503 



Insertion of muscle, 60 



Inspiration, 143 



Integument, structure of, 127 ; and 

 see under various types 



Integumentary sense-organs, 430, 

 464 



Intercellular substance, 115, 117 



Intern eural plate, 440 



Interstitial cells, 298 



Intervertebral discs, 497 



Intervertebral foramina, see Fora- 

 men 



Intervertebral substance, 440, 441 



Intracellular digestion, 234, 305 



Interrenals, 447 



Intestine, 22 ; see its various sub- 

 divisions and Enteric canal 



Invagination, 384, 574 



Invertebrata, 412 



Iris, 5, 182,555 



Irritability, 60, 169, 232, 272 



Ischium, 50, 503 



I 



leum, 22 ; and see Enteric canal 

 Ilium, 50, 503 

 Imbedding, directions for, /J7 



j 



J acobson's organ, 534 



Jaws, 17, 353, 364, 367, 436, 489, 



496 

 Joints, 55, 362, 368 



