394 
Merkel’s corpuscle, 179 
Mesencephalon, 142, 145 
Mesenchyme, ro, 16 
Mesenteric arteries, 284 
Mesenteries, 14, 121 
Mesenteron, 205 
Mesethmoid, 67 
Mesobronchus, 259 
Mesocardia, 16, 122, 270 
Mesocolon, 122 
Mesoderm, 10 
Mesogaster, 15, 122 
Mesohepar, 15, 121 
Mesomere, 13 
Mesonephric tubules, 313 
ducts, 313, 315 
Mesonephros, 310, 313 
Mesopterygium, 115 
Mesopterygoid, 80 
Mesorchium, 16, 122, 319 
Mesothelium, ro 
Mesorectum, 15, 122 
Mesovaria, 16, 122, 319 
Metacarpals, 117 
Metacarpus, 116 
Metaccecle, 123, 143 
Metacone, 214 
Metaconid, 214 
Metamerism, 13 
Metanephros, 310 
Metapodium, 116 
Metapterygium, 115 
Metapterygoid, 80 
Metatarsale, 117 
Metatarsus, 116 
Metazoa, 1 
Metencephalon, 142 
Midbrain, 141, 145 
Middle ear, 187 
plate, 13 
turbinal, 100 
Milk dentition, 211 
glands, 36 
line, 36 
points, 36 
Minimus, 117 
Mitral valve, 281 
Mixipterygium, 116, 343 
Molar gland, 221 
Molars, 213 
Monimostylic, 88 
Monophyodont dentition, 212 
Monorhinal, 191 
Monro, foramen of, 143 
sulcus of, 141 
Morphology, 1 
Mossy cells, 20 
Motor-nerve root, 162 
Mouth, 208 
Miterian duct, 315 
Multangulum, 117 
Multicellular glands, 18 
Muscle plate, 13 
Muscles of appendages, development of, 131 
INDEX. 
Muscles of, dermal, 134 
visceral, 132 
Muscular system, 124 
tissue, 20 
Myelencephalon, 142 
Myocardium, 269 
Myoceele, 14, 121, 126 
Myocommata, 127 
Myoepicardial mantle, 270 
Myofibrillz, 20 
Mylohyoid muscle, 133 
Myosepta, 38, 127 
Myotomes, 14, 121, 127 
Nails, 27 
Nares, external, 190 
internal, 193 
Naro-hypophysial duct, 191 
Nasal bones, 68 
capsules, 190 
Naso-palatal canal, 197 
Naso-pharyngeal duct, 194 
Naso-turbinals, 195 
Navel cord, 351 
Naviculare, 117 
pedis, 117 
Nepopallium, 148 
Nephridia, 308 
Nephridial arteries, 275, 285 
Nephrotomes, 14, 308, 311 
Nerve cell, 19 
Nerve-end apparatus, 178 
Nerve of Weber, 173, 189 
Nervous system, 137 
central, 138 
development of, 137 
tissue, 19 
Neural arch, 45 
crest, 161 
folds, 11 
plate, 11 
spine, 46 
Neurapophysis, 45 
Neurenteric canal, 12 
Neuroglia, 20, 139 
Neuromasts, 167 
Neuron, 19 
Neuropore, 12 
Nictitating membrane, 203 
Non-elastic tissue, 22 
Nose, 197 
Notochord, 12, 44 
sheath of, 45 
Nuchal flexure of brain, 143 
Nuclei of brain, 144 
Nucleus dentatus, 145 
Oblique muscles, 130 
of eye, 128 
Obturator foramen, 109 
Occipitalia, 66 
Occipital bone, 68 
lobes, 159 
