INDEX 



603 



Hypostome (oral cone), 162, 174, 



.177- 

 Hypostome of tick, 271. 

 Hyracoidea, 470, 520. 



Ileum, of cockroach, 277. 



of frog, 47. 



of pigeon, 411. 



of rabbit, 442. 



transverse section of frog's, 86, 

 87. 

 Incorporation, of food, 6, 17, 543. 

 Individuality, v, 180, 181, 212. 

 Insects, 267, 281, 515. 



classification of, 286, S'S- 



life-history of, 282. 

 Intercalary pieces, 346. 

 Intestine, of Amphioxus, 335. 



of crayfish, 250. 



of dogfish, 353. 



of earthworm, 221. 



of leech, 237. 



of pigeon, 411. 



of rabbit, 442. 

 Invertebrates, development of, \ 



508. 

 Irritability, II, 17, 542. 



in Amoeba, 115. 



in leucocytes, 101. 



in plants, 530. 



in protoplasm, 86, 102. 

 Ixodes, 270. 



Jaw, lower. See Mandible. 



upper. See Skull. 

 Jelly fish. See Medusae. 

 Joints, 41. 



" perfect," 41. 

 Juice, gastric and pancreatic, 50. 



Karyokinesis. See Mitosis. 

 Kidneys, 18. 



of dogfish, 354. 



of frog, 64. 



of newt, 385. 



of pigeon, 414. 



of rabbit, 445. 



of reptiles, 391. 



development of, 446, 502. 

 Killing, 552. 

 Kinetonucleus, 148. 



Labium, of cockroach, 274. 



of other insects, 282. 

 Labrum, of cockroach, 272. 



of crayfish, 249. 

 Labyrinth — 



auditory — 



of dogfish, 346, 373. 

 of frog, 33, 81. 

 of pigeon, 417. 

 of rabbit, 428, 458. 



carotid, 57. 



cartilaginous, 33. 



membranous, 33. 

 Lacertilia, 392, 519. 

 Lacinia, 274. 

 Lamarckism, 525. 

 Lamella, structureless, 162, 177. 

 Lamina terminalis, 73. 

 Lamprey, 375. 

 Lancelet, 326. 



alimentary system of, 330. 



atrium of, 328. 



embryology of, 478. 



external features and habits of, 

 326. 



larva of, 482. 



nervous system of, 337. 



reproductive organs of, 338. 



sense organs of, 338. 

 Large intestine, 444. 

 Larvae, 284. 

 Latin names, 512, 513. 

 Law, von Baer's, 510, 523. 

 Layers of the body, 230. 

 Leech, medicinal, 234. 

 Leeches, 234, 238. See also 



Hirudinea. 

 Legs, 18. 



of Arachnida, 268. 



of Araneida, 268. 



of cockroach, 274. 



of crayfish, 246. 



of frog, 25. 



of pigeon, 397. 



of rabbit, 419. 

 Leishmania, 149. 

 Lemuroidea, 520. 

 Lens of frog's eye, 81. 

 Lenses. See Microscope. 

 Lepidoptera, 293, 515. 

 Lefus, 512, 



