Index 



1335 



Ileocolic valve, 124 

 Ileum, 124 



of frog, 67 

 Ilium, 87, 115 

 Implantation, 223 

 Incisors, 112 

 Incus, 187 

 Infusoria, 293 



class, 272 

 Ingestion, 287 

 Inguinal canal, 145 

 Inheritance of sex, 245 

 Innominate bone, 115 

 Insect catch, average, 468 

 Insecta, 395 

 Insects, 23, 415 

 Inspiration, 132 

 Insulin, 205, 207 

 Integument, 158 

 Intelligence quotient, 256 

 Intercalary disks, 57 

 Interventricular septum, 220 

 Interzonal fibers, 51 

 Intracellular digestion, 303 

 Intrauterine development, 223 

 Invertase, 171, 172 

 Inverting enzymes, 169 

 Iodine, 197 

 Iris 94 



Irritability, 42, 132 

 Ischium, 115 

 Ischnochiton, 373 

 Itch mite, 431, 432 



Java man, 494 

 Jellyfish, 23 

 Jellyfishes, 303 

 Jennings, 292 



K 



Karyolymph, 49 

 Karyoplasm, 49 

 Karyosomes, 49 

 Kerona, 273 

 Kidneys, 140 

 function of, 189 



Labrum, 418 



Labyrinth, membranous, 220 



Lacinia, 418 



Lactase, 171, 172 



Lacteals, 79 



Lamarck, 35 



Lampsilis, 375 



internal anatomy, 375 



life history of, 379 

 Lancisi, 280 

 Land habitat, 474 

 Langerhans, islands of, 205 

 Larva, hexacanth, 456 



tornaria, 485 



trochophore, 344, 355, 482 



veliger, 372, 482 

 Larval echinoderms, 483 

 Larynx, 131 

 Laveran, Dr., 280 

 Law, Mendel's, 235 

 Leber 's atrophy, 246 

 Leech, 23 



Leeuwenhoek, 34, 39 

 Lepton, 381 

 Leptolina, order, 304 

 Leptosynapta, 361 

 Leucocytes, 57, 70, 79 

 Levator, 110 

 Levers in body, 116 

 Life, 24 



origin of, 488 



regions, 473 



zones, 475 

 Lincecum, 38 

 Linin net, 49 

 Linkage, 246 

 Linnaeus, 20, 34, 259 

 Lipase, 69, 169, 170, 171 

 Liriope, 307 

 Lithosphere, 459 

 Littoral area, 474 

 Liver fluke, 23 

 Chinese, 437 

 oriental, 449 



functions of, 173 



of rat, 125 

 Lizards, 148 

 Locomotion, 168 

 Locust, 415 

 Loligo, 373 

 Lombok island, 473 

 Louse, body, 431 

 crab, 431 

 head, 431 

 Lubber grasshopper, 416 

 Lucernaria, 308 

 Lumbricus, 344 

 Lung fluke, 450 



Lymnaea, 380, 381, 382, 385, 390, 392 

 Lymph glands, 131 



nodes, 131 

 Lymphatic system of frog, 79 



of rat, 131 

 Lymphocytes, 79 

 Lynx, Canadian, 464 



