536 



INDEX 



M 



Macrocephalus, 234 

 Macrogametes, 276 

 Madrepora, 310 

 Madreporaria, 310 

 Madreporite, 358, 363 

 Malaria, 280, 441 

 Malformations, 226 

 Malleus, 187 

 Malpighian corpuscles, 140, 190 



tubules, 189 

 Malpighi, 32, 39 

 Maltase, 125, 172 

 Malthus' law, 507 

 Maltose, 170, 171, 172 

 Mammalia, 148 

 Man, Cro-Magnon, 495, 497 

 Heidelberg, 495 

 Java, 494, 496 

 Peking, 494 

 Piltdown, 494 

 rise of, 494 ,, 



Manson, 280 

 Mantle, 151 

 Manubrium, 114, 304 

 Manus, 109 

 Marsupials, 487 



Mastigophora, 268, 282 



Matings among defectives, 252 



Maturation, 210 



Maxillae, 112, 399 



Maxillipeds, 399 



Means of dispersal, 478 



Meatus, 220 



Meckel's cartilage, 85 



Mediastinum, 229 



Medulla oblongata, 91, 136 



Medusa, 305, 307 



Medusae, 63 



Megalops, 413 



Meiosis, 211 



Meiotic division, 210 



Meissner's tactile corpuscles, 184 



Melanophore, 66 



Melanoplus, 417 



Membrane bones, 110 



Membranous labyrinth, 94 



Mendel, Gregor J., 37, 237 



Mendel's law, 237 



Meninges, 133 



Menopause, 145 



Menstruation, 224 



Mentum, 420 



Merozoites, 276, 441 



Merychippus, 492 



Mesencephalon, 134 



Mesenchyme, 326 

 Mesoblast cell, 353 



Mesoderm, 215 



formation in frog, 100 

 Mesoglea, 317 

 Mesohippus, 492 

 Mesomere, 222 

 Mesonephric duct, 81 

 Mesonephros, 142, 222 

 Mesorchium, 95 

 Mesothelium, 346 

 Mesothorax, 420 

 Mesovarium, 143 • 

 Metabolic gradient, 225 



processes, 27 

 Metabolism, 43, 166 

 in Amoeba, 287 

 in crayfish, 406 

 in Hydra, 318 

 in Paramecium, 295 

 in Planaria, 331 

 Metacarpals, 114 

 Metacercaria, 450 

 Metacrinus, 361 

 Metagenesis, 63, 307 

 Metameres, 147 

 Metamerism, 157 

 Metanephros, 142, 222 



Metaphase, 51 



Metapleural folds, 154 



Metathorax, 420 



Metazoa, 22 



Metazoan organization, 54 



Metridium, 309 



Microcephalus, 234 



Microdissector, 49 



Microsporidia, 275 



Midbrain, 134 



Miescher's corpuscle, 275 



Migration of animals, 477 



Millepedes, 395 



Millepora, 308 



Miracidium, 448 



Mitochondria, 48 



Mitosis, 50 



Mitral valve, 126 



Molars, 112 



Molgula, 147, 150 



Mollusca, 23, 372 

 classified, 373 

 economic relations of, 391 



Molluscoida, 24 



Molt, 409 



Monecious organisms, 62 



Moniezia, 455, 456 



Monocytes, 79 



Monogenea, 324, 451 



Monohybrid cross, 239 



Morphologic evidence of evolution, 499 



Morphology, 18, 19 



Mosquito, 442 



Mother-of-pearl, 391 



