INDEX. 



1017 



522, 523; of tears, 310, 312; of gastric 

 juice, 526 ; on excretion, 755 ; on excretion 

 of urine, 774; on respiration, 815. psy- 

 chical functions, 297 



Nervous tissues, 50, 991. 997 



Nervous work, 931 



Nervomuscular work, 913, 931 



Neural cavity, 113, 955 



Neurilemma, 53 



Neurility, 89, 219 



Nightmare or incubus, 316 



Nipple, 761 



Nitrogen, effect of breathing, 848. Elimina- 

 tion from lungs, 827 ; from skin, 794 



Nitrogenous food (see Food). Constituents of 

 body, 72, 84 



Nodes or Nodal points of vibrating bodies, 203 



Noeud, vital, 281, 816 



Non-azotized constituents of the body, 75, 86 



Non-nitrogenous food (see Food). Constitu- 

 ents of body, 75, 86 



Non-vascular tissues, 57 



Nose, structure of, 382. Development of, 

 965, 967 



Notochord, 954; changes of, 961 



Nucleated cells, 67, 981-983 



Nucleus and nucleolus of animal cell, 981 ; 

 of vegetable cell, 981 



NUTRITION. 96, 698. Definition, 698, 699. 

 Chyle, 699. Blood, 700 (see Blood). Or- 

 gans and tissues, 700. Areas and centres 

 of. 702. Conditions essential to, 702; 

 modifying it, 704, 705. When most active, 

 702. Essential cause of, 701 ; stage first, 

 700 ; second, 701 ; third, 702 ; fourth, 703; 

 fifth, 703. Continuous growth, 703, 704, 

 996. Interstitial disintegration and depo- 

 sition, 703, 704. Influence of nervous sys- 

 tem on, 311, 705. Not dependent on ner- 

 vous system, 705. Periodic, hypertrophic, 

 and hyper plastic, 705. Perversions of, 705. 

 Dependent on blood, 707. Effect of liga- 

 ture of arteries, 707. Effect of determina- 

 tion of blood, 708. Effect of hemorrhage, 

 708. Office of white corpuscles of blood, 

 708 ; of red, 709 ; of albuminoid principles 

 of blood, 709; of fibrin of blood, 710; of 

 fatty matter of blood, 711 ; of sugar of 

 blood. 711; of extractives of blood, 711; 

 of salts of blood, 712, 713 ; of gases of blood, 

 713. Of the embryo, 956, 958, 978, 979 



Nutritive glands, 733 (see Ductless Glands) 



Nutritive repetition, 704, 996 



Nutritive work of body, 914, 929 



Objective sensory stimuli, 336 



Oblique muscles of eyeball, 420 



Occipital foramen, 26, 989 



Ocular spectra, 466 



Odontophore, 580 



Odors, 384 



(Edema of the glottis, 810 



(ESOPHAGUS, 31, 95, 504, 505. Action in 

 deglutition, 505. In Vertebrata, 585-589. 

 In Mollusca, 589. In Molluscoida, 590. 

 In Annulosa, 590 



(Esophageal groove in Ruminants, 583. Ac- 

 tion of, 584 



Old age, 999. 1001 



Oleic acid, 76 



Olein, 75 



Oleophosphoric acid, 76 



Olfactory cells, 383. lobes, 243, 383, 965 ; 

 in animals, 322, 325 ; development of, 965. 



nerves, 249, 263, 383 

 Olivary bodies, 247, 282 

 Omasum of Ruminants, 583 

 Omenta, 36, 507 

 Omphalo-mesenteric arteries, 956, 975. 



veins. 975 



Operculum of Fishes, 869 

 Ophthalmometer, 441 

 Ophthalmoscope, 472 

 Optic axes, 420, 421. commissure, 420. 



tracts, 420. centre of the eye, 439. 



lobes in animals, 322, 325. nerve, 

 250, 263, 419. pore, 423. thalamus, 

 242, 964 ; functions, 285. vesicles, 965 ; 

 secondary, 965 



Optometers, 444 



Orbits of the eyes, 415 



Organs of the Body, weight of, 897 



Organic bodies. Characters, 124 



Organic proximate constituents of the body, 

 71, 83. Azotized or nitrogenized, 71, 72, 

 84. Non-azotized, 72, 75. 86 



Organic constituents of food, 544, 545. 

 matter in the breath, 828 



Organization, 127, 984 



Osmazome, 78 



Osmosis, 606 



Osseous tissue (see Bone and Tissue) 



Ossicles of the ear, 395, 404, 966 



Ossification, from cartilage, 986 : from mem- 

 brane. 987. Intra-cartilaginous, 986 ; where 

 it occurs, 988. Membranous, 987 ; where 

 found, 987. Centres of, 987. Order of pro- 

 cess, 989 



Osteodentine, 494, 579 



Osteoblasts, 987 



Osteogenic substance, 987 



Otoliths or otoconia, 398, 411 



OVARY. Of Bird, 943. Mammal, 946. Rep- 

 tiles, 948. Amphibia, 948. Fishes, 948. 

 Mollusca, 949. Annulosa, 949. Ccelente- 

 rata, 949. is a gland, 949. Development 

 of, 973 



Oviduct of Bird, 943 



Ovipositor, 949 



Ovisac, 943 



Ovule, Vegetable, 941 



OVUM, 935. Compared with pseudovum, 940. 

 Unfertilized, 940. Origin of, from parent, 



941. General account of, 942. Meroblastic, 



942. Holoblastic, 942. Sizes of, 941, 946. 

 Mammalian, 942, 946. Of Bird and Reptile, 



943. Of Reptiles, 948. Amphibia, 948. 

 Fishes, 948. Mollusca, 948. Annulosa, 949. 

 Coelenterata, 949. Fertilization of, 949. 

 Micropyle of, 950. Changes in, 951 



Ox, daily work of, 920 



Oxalate of lime calculi, 782 



Oxalic acid, 76, 782 



Oxidation of body, 907. of food, the 

 source of force, 913. processes in body, 

 838-841. of muscle, 918. 



Oxygen, 99. Combines with red corpuscles, 

 837. Effect of breathing, 848. Discovery 

 of, 838. Affinity of cruorin for. 832. Com- 

 bines with cruorin, 832. In liquor san- 

 guinis, 832. Absorption of, in respiration, 

 824. Contained in venous and arterial blood, 



