966 



INDEX. 



592 

 594 

 594 

 590 

 5[>9 



PAGE 



Nerves, motor and sensory ......................... 5S6 



- motor, action of ............................... 591 



-- sensory, action of 



-- general properties of 



- irritability of (see Nervous irritability) 

 _ disappearance of the sensory properties of 



- action of electricity upon (see Electricity) 



- process of dying of ............................ 601 



- galvanic current from the exterior to the cut sur- 

 face of ....................................... . . 603 



- cranial (see Cranial nerves) ..................... 608 



- sympathetic (see Sympathetic) ................ 729 



- vaso-motor (see Vaso-motor nerves) ............ 739 



- development of ............................... 916 



Nervous conduction, rapidity of ............ . ....... 597 



Nervous irritability distinct from muscular irritability 



59, 536 



- description of.. . . ............................. 594 



-- distinct in motor and sensory nerves ........... 595 



- influence of woorara upon ..................... 595 



- process of disappearance of, in motor nerves ... 536 

 -- momentary destruction of, by severe shock ..... 596 



- destruction of, by a powerful galvanic shock ---- 597 



Nervous system, influence of, upon the heart ........ 53 



-- influence of, upon absorption .............. 320, 327 



- influence of, upon secretion ................... 317 



- influence of, upon lactation ................ 370, 376 



- influence of, upon the secretion of sweat ....... 393 



--- influence of, upon the secretion of urine ........ 405 



-- origin of cholesterine in ....................... 451 



- influence of, upon the glycogenic function of the 

 liver ............................................ 470 



- influence of, upon animal heat ............. 511, 514 



- general considerations ......................... 563 



- divisions of. .................................. 564 



- physiological anatomy of the tissue of .......... 565 



- anatomical divisions of ........................ 565 



- development of .............................. 916 



-- functions of, in the foetus ...................... 919 



Nervous tissue, composition of ..................... 583 



- fatty constituents of. .......................... 584 



Nervus intercostalis ............................... 730 



Neural canal ................................... 900, 913 



- head-fold of. .................................. 900 



Neurilemma of the spinal cord ..................... 667 



Neurine ........................................... 584 



Neutral point ..................................... 605 



Ninth cranial nerve (see Sublingual nerve) ........... 632 



Nipple, sebaceous glands of ..................... 362, 366 



- structure of .................................. 366 



Nitrogen, proportion of, in the air ................... 140 



- exhalation of, in respiration .................... 154 



- in the blood .................................. 160 



- quantity of, necessary to nutrition . ............ 192 



- in milk ....................................... 375 



Nitrogenized alimentary principles ................. 176 



- digestion of ........................... 243, 267, 277 



Nitrogenized food, influence of, upon the elimination 



of urea .......................................... 428 



-- relations of, to animal heat .................... 512 



Nitrogenized principles, action of the gastric juice 



upon ........................................... 245 



- action of the intestinal juice upon ....... . ...... 267 



- action of the pancreatic juice upon ............. 277 



- action of, in nutrition ......................... 493 



Nitrous oxide, effects of, when respired ............. 141 



Nodes in vibrating strings ......................... 830 



Non-nitrogenized alimentary principles ............. 180 



- action of the gastric juice upon ---- ............ 248 



PAGE 



Non-nitrogenized alimentary principles, action of the 



intestinal juice upon 267 



relations of, to animal heat 513 



action of the pancreatic juice upon 274, 275 



Non-nitrogenized principles in the blood 21 



action of, in nutrition 500 



Non-striated muscular fibres 527 



Nose, uses of the hairs hi the nostrils 390 



development of 923 



Notocorde 914 



Nutrition, relations of respiration to 161 



quantity and variety of food necessary to 191 



general considerations 486 



action of inorganic principles in 488 



principles consumed by the organism 497 



action of nitrogenized principles in 498 



development oi power and endurance by exercise 



and diet 498 



action of non -nitrogenized principles in 500 



modifications of, by various conditions 504 



relations of, to animal heat 512 



(VBeirne, sphincter of 297 



Obliquus externus, action of, in expiration 131 



internus, action of, in expiration 131 



(Esophagus, influence of contraction of the diaphragm 



upon 1 25 



structure of. 218 



glands of 218 



action of, in deglutition 224 



alternate contraction and relaxation of 224 



effects of division of the pneumogastrics upon . . 662 



development of 921 



Oils (see Fats) 183 



Oken, bodies of 927 



Oleine 183, 504 



Oleo-phosphoric acid 5S5 



Olfaction, mechanism of 758 



relations of, to gustation 758 



Olfactory ganglia, or bulbs 756 



Olfactory commissures and nerves, development of. . 919 



Olfactory nerves 754 



physiological anatomy of 755 



general properties of 756 



functions of 757 



Olivary bodies 724 



Olive-oil 183 



Omentum 289 



development of 921 



Omphalo-mesenteric vessels 904, 931, 932 



Ophthalmic ganglion 731 



Ophthalmoscope 779, 791 



Opium, exaggeration of the reflex excitability of the 



spinal cord by 686 



Optic commissure 763 



Optic lobes (see Tubercula quadrigemina) 722 



Optic nerves, physiological anatomy of 767 



decussation of 722, 768 



general properties of 769 



effects of stimulation of 770 



expansion of, in the retina 777 



919 

 721 

 721 

 917 

 776 



Orbicularis oris, action of, in mastication 205 



Orbicularis palpebrarum 812 



Organic matter, exhalation of, by the lungs 154 



development of. 



Optic thalami, physiological anatomy of 



functions of 



development of ': 



Ora serrata of the retina 



