684 



INDEX. 



Middle Ages, Zoology in, g 

 Mid gut, 105 



Miescher's corpuscles, 218 

 Migration of birds, 612 

 Migration theory, 52 

 Miliola, 197, 198 

 Milk teeth, 625 

 Millepora, 233, 241 

 Mimicry, 46 

 Mink, 647 

 Miocene 181 

 Miohippus, 643 

 Jliracidium, 2"6 

 Mites, 453 

 Mitosis, 68 

 Mixipterygium, 570 

 Mnemiopsis, 264 

 Moccasin, 601 

 Modiola, 366, 367 

 Molar teeth, 625 

 Mole cricket, 4S1 

 Moles, 637 

 Molgula, 510 

 Molgulidos, 510 

 MoUusca, 351 

 Molpadia, 349 

 Monactinellidfe, 227 

 Monadina, 202 

 Monascidise, 5 10 

 Monaxial symmetry, 135 

 jNIonera, 189 

 Moniczia, 287, 289 

 Monitor, 599 

 Monkeys, 651 

 Monocaulis, 240, 241 

 Monocystis, 215 

 Monodelphia, 634 

 ]\Ionodon, 646 

 ^lonogenea, 273 

 Monogony, 140 

 Monomyaria, 367 

 Moi^ops, 271 

 Monophyodont, 625 

 Monopneumonia, 579 

 Monopylea, 196 

 Monorhina, 556 

 Monoscelis, 271 

 Monospermy, 148 



Monostomum, 275 



Monothalamia, 198 



Monotocardia, 379 



Monotremata, 631 



Moose, 642 



Morphology, 2 



Morphology, development of, 12 



Mosaic vision, 406 



Mosasaurus, 600 



Moschidse, 642 



Moschus, 642 



Mosquitos, 492 



Mosquitos and malaria, 217 



Moths, 494 



Mouse, 639 



Mud crab, 437 



Mud puppy, 587 



Mud turtle, 596 



Miiller, Fritz, 24 



MuUer, J,, 18 



Muller, O, F., 13 



Miillerian duct, 551 



Muller's fibres, 540 



Mule. 641 



Multicellular glands, 77 



Multicellularity, 70 



Multinuclearity, 70 



Multituberculata, 632 



Muricidje, 380 



Mus, 639 



Musca, 492, 493 



Muscarire, 493 



Muscidre, 493 



Muscle cells, 92 



Muscle fibres, 91 



Muscular tissue, 91 



Musculature. 121 



Musk deer, 642 



Musk ox, 642 



Musk rat, 639 



Mussels, 367 



Mustela, 647 



Mustelidfe, 647 



Mustelus, 571 



Mya, 368 



Mycetozoa, 198 



Myctodera, 587 



Myelin. ot> 



