628 



INDEX 



Ileum, 22 ; and see Enteric 



canal 



Ilium, 50, 503 



Imbedding, directions for, ijS 

 Immortality, 236 

 Impregnation, see Fertilisation 

 Incisors, 509 

 Income and expenditure, 148, 



236, 245 

 Incubation, 615 

 Incus, see Auditory ossicles 

 Individual, 220, 277 

 Individuation, 277, 306 

 Infundibulum, of brain, 159, 



459.530,590; of lung, 518 

 Infusoria, 261, 292 

 Ingesta and egesta, balance of, 



236 



Ingestion, 8, 233 

 Inguinal canal, 538 

 Injection of blood-vessels, 99, 



389, 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, 118 

 Interneural plate, 440 

 Interrenals, 447 

 Interstitial cells, 298 

 Intervertebral discs, 497 

 Intervertebral foramina, see 



Foramen 

 Intervertebral substance, 440, 



441 

 Intestine, 22 ; see its various 



subdivisions and Enteric 



canal 



Intracellular digestion, 234, 305 

 Tnvagination, 384, 577 

 Invcrtebrata, 412 

 Iris, 5, 182, 555 

 Irritability, 60, 169, 232, 272, 



319 

 Ischium, 51, 503 



Jacobson's organ, 534 



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



489, 496 

 Joints, 55, 362, 368 



K 



Karyokinesis, 563 



Keber's organ, see Pericardial 

 gland 



Kidney : Frog, 25, 145 ; Cray- 

 fish, 375 ; Mussel, 406 ; Dog- 

 fish, 466; Rabbit, 537 ; develop- 

 ment of, in Vertebrates, 600 



Labial palp., see Palp 

 Labrum, 370 



Lacrymal glands, 186, 535 

 Lacuna?, see Bone and cartilage 

 Lamella? and laminae of gills 



(Mussel), 401 

 Lamellibranchiata, 411 

 Lamina terminalis, 530 

 LANCELET : general characters, 

 419; fins, 419; skeleton, 422 ; 

 gill-slits and bars, 420, 422 ; 

 enteric canal, 424 ; blood- 

 vessels, 424 ; nephridia, 424 ; 

 nervous system, 424 ; gonads, 

 421, 425 ; development, 425, 

 577 ; practical directions, 6/j 



Larva, 9, 354- 384, 4". 4 2 5. 5 8 



Laryngo-tracheal chamber, 141 



Larynx, 144, 506, 517 



Lateral line, 432, 464 



Laverania, see Malaria organism 



Legs, see Appendages 



Lens of eye, 183, 353, 534, ,t!>:} 



LEPUS, see Rabbit 



Leucocyte, 105, 336, 379, 458 



Life, origin of, 288 ; and see Bio- 

 genesis 



Life-history, 8, 206 ; and see 

 under various types 



