INDEX 591 



Nucleolus of nerve cell. 468 



ovum, 537 

 Nucleus (a kernel) in white corpuscles, 95 



division of, in growth of ovum, 537, 538 

 in cells of capillary walls, 31 

 in nerve-flbres, 460 



in unstriped muscular fibre-cells, 44, 288 

 Nutrition effected by circulation of blood. 23 



connection of thjToid gland with, 218 

 food and. 268 et seq. 

 some statistics of, 268 

 Nutritive foramen of bone, 308 



Oblique muscles of the eye, 306, 414, 415, 516 



Occipital lobe. 505. 529 



Oculomotor nerve. 407 



Ocular spectra, 441 



( klontoid (66ous, iidin-os, a tooth ; ft5os. form) process, 322 



•Esophagus (oio-w, obsolete = </)e'pu, I bear ; (Jayeif, to eat), 10, 130, 



230, 236 

 Olecranon (<iAerT). the elbow ; Kp6.vo<;, a helmet), 310 

 Olfactory {olfacio. I smell) lobes, 362 

 epithelium, 365 et seq. 

 membrane. 365 

 nerves. 501. 515 



prolongations of cerebral hemispheres, 515, 518 

 Optic chiasma. 517, 519 

 nerve, 417, 501. 515 



not directly excited by light. 426 

 a prolongation of third ventricle of brain, 517 

 ramifications of, 419 

 thalami. 507 

 tracts. 518 

 Optical delusions. 441. 443 

 Ora serrata (serrated border). 403 



Orbicular (orbiculus. a small round ball) bone, 370 note 

 Orbicularis muscle, 415 

 Orbit of the eye. 398 

 Organ oi Corti. 376 et seq. 

 Organic compounds in foods. 225 

 Organules of special sense, 343 

 Origin of a muscle, 305 

 Osmosis (IU0-M05. impulsion), 120 

 Ossa innominata. 16 

 Osseous labyrinth of ear. 393 



tissues. 307 

 Ossicles (ossicula. a little bone), auditory. 370, 378 

 ■' Outness," sense of. accompanying sense of smeU, 438 

 Oven, heated, conditions of safely remaining in, 206 

 Overtones, their nature. 385 

 Ovum, mammalian, described. 537 

 Oxidation, change to arterial blood caused by, 125, 126 

 of proteid matter. 225 

 in tissues, the source of energy, 7, 225, 282 



of heat. 24. 172. 202. 225 

 Oxygen (ufOs, acid : yevvdai, I produce), absorption of, by the lungs, 

 24, 127, 152, 154, 162, 173, 564 



