INDEX. 



775 



Nodes of Ranvier, 452 

 Non-azotized or Non-nitrogenous food, 

 209 



organic principles, 747 

 Nose. See Smell. 



development of, 703 

 Notochord, 664 

 Nucleus, 16 



lateralis, 495 



position, 16 



staining of, 17 

 Nutrition 432 



general nature, 433 



of cells, 5 

 Nymphse, 640 



O. 



Odontoblasts, 228 

 Odors, 



causes of, 563 et seq. 



different kinds of, 566 



perception of, 563 

 varies in different classes, 566 



relation to taste, 562 

 (Esophagus, 242 

 Oil, absorption of, 314 

 Oleaginous principles, digestion of, 273 

 Oleic acid, 747 

 Olfactory cells, 565 



centre, 529 



nerve, 563 



subjective sensations of, 566 

 Olivary body, 595 



fasciculus, 595 

 Omphalo-mesenteric 



arteries, 692 



duct, 668 



veins, 692 

 Oncograph, 374 

 Oncometer, 374 

 Ophthalmic ganglion, relation of third 



nerve, 531 



Ophthalmoscope, 607 

 Optic 



lobes, corpora quadrigemina homo- 



logues of, 500 

 functions of, 500 



nerve, decussation of, 529 

 point of entrance insensible to light, 

 604 



thalamus, function of, 523 



vesicle, primary, 700 



secondary, 700 

 Optical angle, 611 



^apparatus of eye, 584 

 Ora serrata of retina, 588 

 Orang, 



brain of, 511 

 Organ of Corti, 572 

 Organic compounds in body, 733 



instability of, 733 



Organs of sense, development of, 700 

 Osmosis, 311 



Os uteri, 639 

 Osseous labyrinth, 570 

 Ossicles of the ear, 569 

 Ossicula auditus, 569 

 Ossification, 49 et seq. 

 Osteoblasts, 49 

 Osteoclasts, 53 

 Otoconia or Otoliths, 574 



use of, 579 

 Ovaries, 635 



enlargement of, at puberty, 649 



Graatian vesicles in, 636 

 Ovisacs, 636 

 Ovoblasts, 638 

 Ovum, 636 



action of seminal fluid on, 657 et seq. 



changes of, in ovary, 637 



previous to formation of embryo, 

 656 



subsequent to cleavage, 658 et seq 



in uterus, 658 et seq. 



cleaving of yelk, 658 



connection of, with uterus, 649 



discharge of, from ovary, 649 



formation of, 637 



germinal vesicle and spot of, 636 et seq. 



impregnation, 657 



structure of, 636 



unimpregnated, 636 

 Oviduct, or Fallopian tube, 638 

 Oxalic acid, 372 

 Oxalic acid in urine, 372 

 Oxaluric acid, 370 

 Oxygen, 732 



in blood, 82 



consumed in breathing, 190 



effects of, on color of blood, 83 



proportion of, to carbonic acid, 188 et 



seq. 

 Oxyhaemoglobin, 85 



spectrum, 85 



P. 



Pacchionian bodies, 472 

 Pacinian bodies or corpuscles, 460 

 Pain, 550 

 Palmitin, 747 

 Pancreas, 270 



development of, 705 



functions of, 272 et seq. 



structure, 270 

 Pancreatic fluid, 271 

 Papilla foliata, 588 

 Papillae 



of the kidney, 353 



of skin, distribution of, 342 



epithelium of, 343 



of teeth, 227 



of tongue, 557 



Paraglobulin, 63, 79, 738 et seq. 

 Par vagum. See Pneumogastric nerve. 

 Paralysis, cross, 499 

 Parapeptone, 253 



