830 



INDEX 



Man, prehistoric, 111-111) 



skull, 771 

 Mandibles, 599, 601 

 Mantle, 630, 635-637, 640, 643, 650 

 Mantle cavity, of brachiopod, 548 



of clam, 638 



of snail, 643 

 Marine, D., 260, 261 

 Marsupialia, 755, 756, 758 

 Marsupium, 755, 759 

 Mastax. 539, 540 

 Mastigophora, 432, 433, 437 

 Matter, 9, 10, 12, 25 



living, 1 



states of, 19 



structure of, 13 

 Maxillae, 599, 601, 602, 693 

 Mayer, J. R., 57 

 Mayfly, 573, 590, 595 

 Mecoptera, 593 



Medulla, 302-305, 311, 705, 706 

 Medulla oblongata, 707 

 Medusa, 465, 469, 478, 479, 480, 481, 485 

 Megasoma elephas, 592 

 Meiosis, 39, 43, 44, 45, 46. 394, 401, 403, 



404 

 Meissner's corpuscle, 310 

 Melanin, 418, 691, 732, 733 

 Melanophores, 691 

 Melanoplus jemiir-rubriim, 600 



mexicanus, 600 

 Mendel, G., 389, 390, 392, 393, 408 



experiments, 391, 392, 403 



law of independent assortment, 401, 402 

 Meninges, 372, 704 

 Meningitis, 301 

 Menstrual cycle, 354, 355 

 Menstruation, 351-353 

 Mering, J., 268 

 Merozoites, 445, 447 

 Mesencephalon, 706 

 Mesenchyme, 457, 459, 464, 536, 545 

 Mesentery, 190 



Mesoderm, 362, 365, 366, 370, 374-376 

 Mesodermal somites, 370 

 Mesoglea, 466, 472-476, 480 

 Mesonephros, 244, 246 

 Mesovarium, 347 

 Mesozoic era, 779 



Metabolism, 65, 66, 125, 170, 216, 242, 

 256, 260, 262, 264, 267, 269, 366, 

 368, 377 

 Metacarpals, 144, 148, 150, 152 

 Metamorphosis, 376 

 frog, 685 

 insect, 595-598 

 salamander, 686 

 Metanephros, 244, 246, 247 

 Metaphase, 39, 40-42, 46, 363, 365 

 Metatarsals, 148, 150, 152, 693 

 Metencephalon, 707 



Microciona, 461, 463 

 Microsorcx hoyi winnemana, 69 

 Midbrain, 294, 302, 303, 305, 372 

 Middle ear, 317, 319, 320, 321, 375 

 Midgut, 606 



Migration, birds, 749, 750 

 fish, 666, 667, 679, 680 

 insects, 596 

 Millepora alicornia, 481 

 Millipedes, 622, 798 

 Milt, 679 

 Mimicry, 90 

 Mineral cycle, 79 

 Mineral salts, 28 



Minerals. 168, 169, 172, 174, 196 

 Mink, 763 

 Minkowski, O., 268 

 Minot, G. R., 204 

 Mites, 626, 628, 629. 798 

 Mitochondria, 33, 36 

 Mitosis, 39, 42, 43, 44, 45, 46 



results of, 43, 338 

 Mitotic divisions, 394 

 Molecules, 1, 13, 14, 19, 20. 26, 35 

 Mollusca. 630-650. 663, 798 

 Molt, birds, 733, 734 



crabs, 316 



frogs, 690 



insects. 257, 258, 594-598, 606 



lobsters, 316, 585, 586 



salamander, 263, 265 

 Monkey embryo, 381 

 Monocystis agilis. 563 

 Monocyte, 123, 202, 205-207 

 Monohybrid cross, 298, 400 

 Monotremata, 754 

 Morgan, T. H., 505 

 Mouth cavity, 178 

 Movement of arms and legs. 167 

 Mud-puppies, 683, 684 

 Muller, H. J., 39, 41, 410, 411 

 Murphy, W. P., 204 

 Muscle, cardiac or heart, 157 



contraction. 163 



fatigue. 161 



heat-production, 162 



involuntary or smooth, 157, 164, 165 



recovery, 163 



relaxation, 163 



stimulation, 160 



tetanus, 162 



tonus, 161 



voluntary, striated, skeletal, 157, 158- 

 161, 162. 164-166 

 Muscular system, 155 



flexibility, 156 



man, 151 

 Muscular tissue, 107, 119 



red and white, 121 



smooth. 120 



striated, 120, 121 



