INDEX 



487 



Intrauterine development, 161 

 Inverting enzymes, 107 

 Iris, 194, 257 

 Irritability, 10 

 Islet cells, 103, 104 



ISOPTERA, 429 



Iter, of midbrain, 176 



Jaws, 254 



Johannsen, W., 322 

 Joints, 37 

 Jnliis, 424 



K 



Kallima, mimicry of, 334, 335 

 Kangaroo, 357 

 Karyokinesis, 19, 222 

 Karyolymph, 17 

 Keratohyaline granules, 46 

 Kidney, frog, 147 

 human, 150, 151 



KlNORHYNCHA, 411 



Knee jerk, 184 

 Krause's corpuscle, 188 

 Krause's membrane, 183 



Labium, 87, 424 

 Labrum, 87, 424 

 Labyrinth, bony, 200 



membranous, 200, 256 

 Lacbrtilia, 451 

 Lactase, 107 



Lactogenic hormone, 208 

 Lagopus, 334 



Lamarck, J. B., 1, 311, 325 

 Lamprey, 446 

 Laqueus, 413 

 Large intestine, 33 



cat, 102 



frog, 102 



horse, 102 



man, 102 



Larva, 40 



tadpole, 254-256 



trochophore, 416 



veliger, 433 

 Larynx, 32-35 

 Lateral dermal fold, 28 

 Latissimus dorsi muscle, 78 

 Lavine, 111 



Law of biogenesis, 258, 293 

 Law of independent assortment, 270 

 Law of population, 313 

 Law of segregation, 270 

 Leech, 417 



Leeuwenhoek, A. van, 367 

 Lens, 194, 257 

 Lepidoderma, 411 

 Lepidoptera, 431 

 Lepidosiren, 449 

 Lepisosteus, 449 

 Leptinotarsa, 431 



amitosis, 225 



egg, 227 

 Leptocardia, 442 

 Leptosynapta, 440 

 Lepus, 334 

 Lethocerus, 430 

 Leucocytes, 136-138 

 Leucon sponge, 386 

 Levator bulbi, 197 

 Libinia, 422 



symbiosis of, 347 

 Lice, 430 

 Light, 353, 354 



perception of, 195 



reaction to, 353 



receptors of, 191 

 Limax, 434 

 Limbs, 69, 70 

 Limulus, 422 

 Linea alba, 76 

 Linkage, 284 

 Linnaeus, C, 23 

 Lipase, 33, 107, 114 

 Lipolytic enzyme, 107 

 Lithobius, 377 

 Lithocyst, 198 

 Little, C. C, 268 

 Littoral animals, 361 



