632 



ANIMAL BIOLOGY 



Ionization, 11, 23, 507 



Ions, 11 



Iris, 227, 338, 339, 496 



Irish elk, 551 



Iron, 19 



Irritability, 18, 495 



Ischium, 327, 400 



Ischnochiton, 222 



Island faunas, 532 



Islets of Langerhans, 492, 493 



Isolation, 528 



Isopods, 266, 267 



Itch mite, 307, 308 



Ivory, 448 



Java ape man, 452 



Jaws, 248, 252, 344, 393, 424, 426 



Jelly fishes, 144-147, 149, 181, 460 



Jennings, 201 



Jewelers coral, 163 



Jugular vein, 345, 428 



Jumping mice, 445, 537 



Jungle fowl, 423 



Jurassic period, 229, 539, 541, 543 



K 



Kallima, 513 



Kangaroo, 432, 433 



Karyokinesis, 49 



Karyosome, 30 



Katabolic processes, 461 



Katabolism, 38, 43 



Katydids, 283, 288 



Keel, sternum, 406 



Kelvin, 27 



Keratin, 100 



Keweenawan period, 539, 540 



Kidney, 214, 217, 329, 331, 332, 470, 494 



(See also Excretory system; Mesonephros; 

 Metanephros; Pronephros) 

 Kidney types, 331 

 Killdeer, 417 

 Kinetic energy, 15, 38, 480 



(See also Heat; Light; Movement; etc.) 

 King, A. F. A., 91 

 King crabs, 309, 542 

 King of herrings, 364 

 Kingfisher, foot, 413 

 Kiwi, 533, 534 



Labial palps, 216 

 Labium, 277, 278 

 Labrum, 277, 278 

 Labyrinths, ear, 336 

 Lace-winged flies, 295 

 Lachrymal glands, 339, 368 

 Lacunae, bone, 101, 326 

 Ladybird beetles, 294 

 Lake communities, 507 

 Lamarck, 545, 571 



Lamellae, branchial, 138, 215 



Lamellibranchiata, 225 



Lamp shells, 193 



Lamprey, 340, 342, 342, 470 



Lampsilis liganientina, 218 



Lampsilis luteola, 220 



Lancelet, 320 



Langerhans, islets of, 492, 493 



Large intestine, 327, 329 



Larvae, 118, 479, 513 



ascaris, 181 



bUndworms, 374 



Crustacea, 268, 272 



hookworm, 182 



insects, 283, 286, 288, 291-297 



jellyfish, 151, 152 



lungfish, 352 



mussel, 218 



myriapods, 275 



piUdium, 187 



sponges, 133, 135 



tapeworm, 176, 177 



tornaria, 316 

 Larval organs, 479 

 Larval stage, 284 

 Larval thread, 218 

 Larynx, 328, 330, 427 

 Lasius niger americanus, 289 

 Lateral canals, 196, 197 

 Lateral fissure, 423 

 Lateral line, 179, 334, 352, 359 

 Lateral vein, 323, 345 

 Latrodectus mactans, 306 

 Laurer's canal, 168, 169 

 Laveran, 91 

 Lavoisier, 480 

 Law, biogenetic, 270, 572, 583 



of partial pressures, 491 



of segregation, 558 



Von Baer's, 583 

 Leaf beetle, 290 

 Leaf butterfly, 513 

 Leaf insect, 613 

 Learning, .501 

 Lecithin, 20 



Leeches, 250-251, 254, 491, 526 

 Leeuwenhoek, 581 

 Legs, 511-512 



anthropoid apes, 450 



arthropods, 310 



crayfish, 255-258, 264 



crow, 414 



Crustacea, 265-268 



frogs and toads, 372 



insects, 277-279 



kangaroo, 433 



myriapods, 273-275 



spiders, 303 



vertebrates, 322 

 Leg bones, 404, 451 

 Lemming, 530 

 Lemuria, 528 

 Lemurs, 437, 534 

 Lens, eye, 252, 338, 339, 368, 375 

 Leodice viridis, 264 



