INDEX 



375 



178 ; vertebral column, 179 ; vivip- 

 arous, 160, 236 (see Vertebrates) 



Mammary glands, 159, 168, 236 



Man, 163, 164 (see Mammals) 



Mandibles, Bee, 124, 125 ; Crayfish, 

 103, 104; Grasshopper, 114 



Mantle, Clam, 140 



Mantle cavity, 142, 145 



Manubrium, 70 



Marrow, bone, 174 



Marsupium, Mammals, 160, 236 



Mastigamoeba, 33 



Mastigophora, 33 



Matrix, 34, 172 



Maxillae, Bee, 125; Crayfish, 103; 

 Frog, 176; Grasshopper, 114 



Maxillipeds, 102, 103 



Meckel's cartilage, 176 



Medulla oblongata, 209 



Medullary folds, 226, 234 



Medullary plate, 225, 234 



Medusa, Obelia, 69-71 



Membrana granulosa, 205 



Membrane bone, 174 



Membranes, embryonic, or fetal, 235, 

 237 ; vitelline, 222 



Membranous labyrinth, 217 



Mesenteries, 183 



Mesoderm, 66; Chick, 234; Earth- 

 worm, 81, 94; Frog, 225, 227, 229 

 (see Germ layers, primary) 



Mesogloea, Gonionemus, 71 ; Hydra, 

 58, 66; Obelia, 69-71 



Mesonephros, 202, 232 



Meso thorax, 116, 125 



Mesovarium, 232 



Metabolism, 8, 9 (see Life processes) 



Metacarpal bones, 180 



Metagenesis (see Alternation of 

 generations) 



Metamerism (see Segmentation) 



Metamorphosis, Bee, 121, 132; com- 

 plete, 122; Grasshopper, 122; 

 incomplete, 122 ; Tadpole, 229 



Metanephros, 202, 232 



Metaplasm, 5 



Metatarsal bones, 180 



Metatheria, 160, 236 



Metathorax, 116, 125 



Metazoa, 14, 64 



Microgamete, 51 



Micronucleus, Paramecium, 40, 44- 

 46 ; Vorticella, 49, 50 



Mid-brain, Frog, 209, 226 



Milk, 159 



Mimicry, 115 



Mitochondria, 5 



Mitosis, 14, 25 ; Ascaris, laboratory, 

 357 (see Cell division, Cleavage) 



Molar, teeth, 178 



Molds, 13 



Molgula, 141 



Mollusca, characteristics, 139 (see 

 Clam) 



Monkeys, 163 



Morula, 237 



Mosquito, 137 



Moth, 137; laboratory, 303 



Motor nerves, 213 



Motor response, 46 



Molting, 110, 122, 132 



Mouth, Amoeba, 23; Bee, 124; 

 Clam, 142; Crayfish, 104; Earth- 

 worm, 82, 85, 87 ; Frog, 165, 185, 

 226; Grasshopper, 114, 118; Hy- 

 dra, 58, 62 ; Obelia, 69 ; Vorticella, 

 48, 50 



Mouth parts, Bee, 124, 125; Cray- 

 fish, 102, 103; Grasshopper, 116; 

 Insects, 115, 116 



Movement, 15; amoeboid, 20; 

 Brownian, 16 ; Elodea, 12 ; eugle- 

 noid, 29 ; intracellular, 16 ; muscu- 

 lar, 17, 171 ; protoplasmic, 16 



Mucosa, 168, 186 



' Muscle-nerve preparation,' 171 



Muscles, cardiac, 169 ; eye, 218, 219 ; 

 histology, 170; limb, 170; stri- 

 ated, 169 ; types, 170 ; unstriated, 

 169 



Muscle tissue, 17, 48, 85 86, 140; 

 description, 169-172; laboratory, 

 317 



Musculo-cutaneous, veins, 194 



Mussel, 139 (see Clam) 



Myotomes, Chick, 234 ; Frog, 227 



Mytilus, 141 



Myxinoidea, 154 



N 



Nails, 160 



Nares, external 165, 216; internal, 



185 

 Nasal bones, 176 

 Neck, 165 



