INDEX 



465 



Nerves {continued) 



Spinal nerves and ganglia. 

 Fibers. 

 Number and axis-sheath relation, 97, 

 100 (T. 58) 101 (T. 61) 102 (T. 62) 

 103 (T. 64) 104 (T. 65). 

 Area of fibers, 102, 104 (T. 64, 66, 69) 

 Diameter of fibers, 100 



(T. 61, 67, 68). 

 Axis-sheath relation, 102 (T. 64) 



104 (T. 66) 107 (T. 69). 

 Distal excess, 102 (T. 63\ 

 Cells. 

 Number ' of ganglion cells, 102 



(T. 61, 62). 

 Diameters of ganglion cells, 98 



(T. 59, 60) 105 (T. 67). 

 Diameters of spinal cord cells, 106 

 (T. 68). 

 Peripheral nerves. 

 Number of fibers (N. peronealis), 104 



(T. 65). 

 Axis-sheath relation, 104 (T. 66). 

 Degeneration and regeneration, 139. 

 Sympathetic. 



Fibers less than 4^, 107 (T. 70). 

 Ganglion cells. 

 Superior cerveal sympathetic, 107 

 (T. 71). 

 Nucleus-plasma ratio, 108 (T. 71). 



Nervous System 



Anatomy, 76-119. 



Technical methods, 108-114 (T. 72-77). 

 Growth of, 206 (T. 144) (C. 30). 

 Physiology of, 136-139 (T. 91-93) 

 (C. 15, 16). 



Nitrogen (.See Metabolism) 



Norway Rat (.See also Rat) 

 Domestication of, 382-386. 

 Compared with Albino : N. 339, 358, 361, 

 362, 366, 367, 382-386 

 (T. 192, 194, 196, 198, 200, 212). 



Nutrition, 151. 



Nystagmus, 141 (T. 94). 



Oestrus Cycle, 18 (T. 2, 2a, 3) 153, 155 

 (T. 113). 



Oogenesis, 38 (T. 10). 



Organs (.See Growth of organs) 



With early rapid growth, 206-208. 

 With nearly uniform growth, 208-221. 

 With a sinuous graph of growth, 222-224. 



Ossification 



First centers of, 43 (T. 14). 



Rat and man, 46, 47 (T. 14a). 



Fusion of epiphyses, 48, 49 (T. 15, 15a). 



Ovulation 



Puberty, 18. 

 Period of, 19. 

 Menopause, 19. 



Ovum 



Ova — Distance from fimbria, 38 (T. 11). 



Ova — Diameter, 38. 



Ova— Volume, 41 (T. 12). 



Ova— Number on age, 38 (T. 10) (C. 1). 



Ova — Number per ovulation, 24. 



Ova — Death rate of, 24. 



Ovaries 



Growth of, 222 (T. 146) (C. 45). 

 Hypertrophy of surviving, 180. 

 During gestation, 155 (C. 17). 

 During lactation, 155 (C. 18). 

 After removal of young, 157. 

 Spaying, 179. 



Pancreas 



Growth of, 216 (T. 147) (C. 40). 

 Islets of Langerhans, 126 (T. 88a). 

 Size of cells and nuclei, 123 (T. 84). 



Parathyroids (.See Thyroid) 



Parts of Body (Larger Divisions) 

 Fore limbs. Hind limbs, Head,^,Trunk, 

 181 (T. 123): N. 355 (T. 189). 



Parturition, 21. 



Pathology, 327-328. 

 Rat diseases, 327. 



