880 hid ex 



Insects, orders of — Cont'd- 



Neuroptera, 417, 563 



Odonata, 414, 550 



Orthoptera, 415, 554 



Plccoptera, 415, 551 



Siphonaptera, 418, 571 



Thysanoptera, 416, 557 



Thysanura, 414, 550 



Trichoptera, 417, 565 

 Instar, 413* 

 Instinct, 665 

 Insulin, 511 {see also Endocrine 



glands) 

 Integument, 140,* 202, 203, 225,* 344, 

 349, 368, 384, 459-465 (see 

 also specific organisms) 

 Intersex, 699 

 Interzonal fiber, 65 



Intestine, 296,* 299,* 306,* 311*-313,* 

 321,* 322,* 327,* 328,* 332,* 

 369-380, 384, 396,* 473, 507* 

 Intussusception, 95, 101, 838 

 Invaginate, 838 

 Ions, 77, 83, 89, 751 

 Iris, 497,* 498,* 505 

 Iron, 169 



Irritability, 96, 101 

 Ischium bone, 423,* 425 

 Isogamous, 115, 116, 118, 125, 154- 



157, 160, 161, 167 

 Isotonic, 754 

 Isotope, 82 



Jacket layer, 129, 130, 132,* 164, 165, 



185 

 Janssen, 27 



Jaw, 298, 331, 423, 424 

 Jejunum, 411,* 475 

 Jellyfish, 289, 290, 290* 

 Joints, 465, 466 

 Juices, digestive, 430 (see also specific 



organisms; Digestion) 

 Jussieu, Bernard, 802 



K 



Kappa particle, 357 



Karyokinesis (see Mitosis) 



Karyolymph, 44 



Karyosome, 40,* 44 



Katabolism (see Catabolism) 



Katydid {see Insects) 



Keel of flower, 144,* 212 



Kelp (Laminaria), 116, 118, 118,* 



160, 161 

 Keratin, 459, 460* 

 Kidney, 311,* 312,* 316,* 340,* 435, 



439, 440, 492, 493, 493* 



Killer (in paramecia), 357 



Kinesthetic, 496 



Kinetic energy, 79, 105 



Kinetochore, 679 



Knoll, 35 



Koch, Robert, 804 



Koelreuter, 802 



Labium, 313,* 395,* 409, 410,* 411* 

 Labrum, 395,* 404, 409 

 Lac, 559* 



Lacewing {see Insects) 

 Lacteal, 481,* 488* 

 Lacuna, 49, 50,* 51* 

 Lamarck, 802 

 Lamella, 39, 49, 50* 

 Lamellibranchiata, 311 

 Lamina, 223 



Laminaria (kelp), 118, 118,* 154, 161 

 Lamprey, 328,* 331, 573 

 Lancet {see Amphioxus) 

 Langerhans, islands of, 508, 511 

 Larva, 399,* 407, 413,* 419, 447 

 Larynx, 434, 469,* 490,* 491 

 Lateral line, 331,* 331 

 Leaves, 133-148, 191-198, 200-204, 206- 

 218, 223, 223,* 224 



absorption bv, 226, 227 



parts, 206-218 



transpiration by, 226, 227 



Leech, 306, 308,* 309, 541, 788 

 Leeuwenhoek, 27, 274, 802 

 Leguminous plants, 144,* 211, 212 

 Lens, 398, 456,* 497,* 505 

 liCthal gene or factor, 694 

 Leucocidin, 659 



Leucocyte, 390, 396, 434, 484-486 {see 

 also Tissue, blood) 



Leucopenia, 486 

 Leucoplast (leucoplastid), 43 

 Leucosin, 116, 153, 159 

 Leucosolenia (sponge), 282*-284* 

 Lice, 786 



bark, 556,* 557 



biting bird, 551, 553* 



book, 556,* 557 



dog, hog, rat, 553, 554* 



human, 553, 554* 



Lichen, 113, 114, 116, 151, 152, 155, 



662, 663* 

 Life cycle {see reproduction of specific 

 organisms) 

 from life, 733 

 Ligament, 47, 49 

 Light, 233, 234, 626, 633, 762 

 Lignin, 39, 59, 209, 261 

 Ligule, 193 



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