848 



Subject Index 



Nerve (s) — {Continued) 

 trunks, sympathetic, 177 

 vagus (pneumogastric), 28, 160,167, 178 

 vertebral, 178 

 vidian, 178 

 visceral, 160, 182 

 Nerve-cells, 140 

 Nerve-ending, motor, 314, 315 

 Nervous arc, 142 



organs, 418, 419, 420, 448 



central, 140, 141, 142-157, 258, 407 

 system(s), 140-215 



analogies concerning, 667, 668, 715- 



718 

 anatomical comparisons of, 667, 668, 

 720 

 tissue, 316-320 

 Nervus erigens, 178 



terminalis, 162 

 Nest(s), 238, 239, 241 

 Nestling down-feathers, 507 

 Neural arch, 106, 107, 111, 112, 279, 413. 

 414 

 crest(s), 186, 271, 272, 273, 275 

 groove, 272 

 plate, 186, 254, 258, 262, 268, 271, 272, 



494, 495 

 tube, 143, 144, 152, 173, 186, 200, 217, 

 228, 258, 259, 267, 269, 270, 271, 

 272, 273, 275, 281 

 central canal of, 272, 273 

 pigment spot in, 270 

 Neuraxon, 316, 318 (see also Axon and 



Neurite) 

 Neurenteric canal, 267, 268, 270, 274, 275 

 Neurilemma, 141, 142, 319 



nucleus of, 141 

 Neurite, 141, 193, 316 (see also Neuraxon, 



Axon) 

 Neurofibrils (fibrillae), 142, 317, 318 

 Neuroglia, 320 

 Neurohumors, 139, 142 

 Neuromast, 164-167 



Neuron(s), 140, 153, 171, 182, 202, 316, 

 317 

 association, 141, 184 

 autonomic, 186-187 

 connector, 182 

 correlation, 141 



exciter (postganglionic), 182, 219 

 intercalary, 142 

 sympathetic, 174 

 Neuropore, 267, 268, 270 

 Neutrophils, 329 

 Newts, 452, 454 



Nictitating membrane, 451, 476, 685 

 Nighthawks, 551, 553 

 Nightingales, 553 

 Nipple, 577, 578, 579 

 Nissl's bodies, 318 

 Node(s) of Ranvier, 140, 141, 319 

 Nodose ganglion, 167 

 Nodule of lymph gland, 66 

 Nondeciduate placenta, 294 

 Nonepitheha! tissues, 311 



Non-striated muscles, 96, 154-156, 285, 



288, 312, 313 

 Nose, 100, 679, 680 

 Nostril, 198 

 Notochord, 6, 101, 104-106, 107, 137, L43, 



144, 228, 259, 260, 261, 262, 267. 



268, 269, 270, 271, 272, 273, 274, 



275, 277, 281, 296, 298, 322, 323, 



393, 442, 448, 468 

 modifications of, 786 

 Notochordal axis, 104-106 

 Notorvctes, 733, 774, 775 

 Nucleus(i), 140, 141, 142, 153 

 egg, 237, 249 

 of Pander, 236 

 Nutrition, provisions for, 238, 242, 243, 



245, 246 



Oblique muscles, 



abdominal wall, 90, 91. 587, 588 



eye, 162, 163, 164 



in mammals, 684, 685 

 Obsolete organs. 299 

 Occipital arch, 112, 122, 124 



bone, 122 



condyles, 561, 564, 596 



lobe, 177, 706 



muscles, 98 



vertebrae (see Vertebrae) 

 Ocellus, 396 

 Ochotona saxatillis, 742 

 Oculomotor nerves, 100, 162, 163, 178, 179 

 Odobenus, 750 

 Odontoblast (s), 37, 38, 39, 40, 42 



layer, 38, 40, 42, 47 

 Odontoceti, 765 

 Odontognathae, 543 

 Odontoid process, 111, 593 

 Oestrelata haesitata, 548 

 Oil-birds, 553 

 Oil-glands, 206, 51 1 

 Okapi, 757, 759 

 Old age, phylogenetic, 795 

 Olfactory bulb, 177 



capsule, 116 



cells, 196, 197, 198 



epithelium, 197, 675 



fibers, 713 



glands, 197, 198 



lobe, 144, 145, 148, 198. 711) 



nerves, 143, 162, 198 



organs, 103, 116, 195-199, 273, 419, 475, 

 532 

 of mammals, 671-679 

 of man, 675, 676 



region , 532 



sacs, 144 

 Omentum. 279 

 Omnivorous mammals, 569 

 Omohyoid muscle, 99 

 Omosternum, 132 

 Ontogeny, 297, 298, 340 

 Onychodactylus, 452 



