470 



INDEX. 



Miiller, development of the ducts of, 

 into the Fallopian tubes, 421, 422, 423 



Muscles of the eyeball, 130 



general action of, 132 



associated action of, 135 



Muscles of the eyelids, 139 



Muscles of the middle ear, 158 



Muscular sense, so called, 15 



Muscular system, development of, 397 



Music, early history of, 168 



Musical scale, 176 



Musical keys, 177 



Musical intervals, 178 



Musical quality, 179 



Naboth, ovules of, 283 



Nails, first appearance of, 397 



Nares, separation of, from the 



mouth, 416 



separation of, from each oth- 

 er,. 416 



Nasal fossse, 25 



development of, . 416 



Nerves, development of, 398 



Nervous system, development of, . 398 



functions of, in the foetus,. . . 404 



Neural canal,. 360, 390, 398 



Nodal lines in vibrating plates,.. . 194 



Nodes in vibrating strings, 185 



Noise, as distinguished from sound, 171 



Nose, development of, 413, 414 



Notocorde, 393 



Nutrition, variations in, at differ- 

 ent ages, 460 



Oblique muscles of the eye, action 



of, 134 



(Esophagus, development of, 408 



Oken, bodies of (see Wolffian bod- 



ies), 420 



Old age, 459 



Olfaction, 25 



membrane endowed with the 



sense of, 26 



loss of, after destruction of 



the olfactory nerves or bulbs, . . 30 



mechanism of, 33 



distinction between odorous 



impressions and those which af- 

 fect general sensibility, 33 



relations of, to gustation, 35, 232 



Olfactory bulbs, 28 



Olfactory cells, 28 



Olfactory lobes, nerves, and com- 

 missures, development of, 403 



Olfactory nerves, physiological 



anatomy of, 27 



general properties of, 29 



insensibility of, to ordinary 



impressions, 29 



Omentum, development of, 407 



Omphalo-mesenteric canal, 367 



Omphalo-mesenteric vessels, 367, 



431, 434 



Optic commissures, 39 



Optic nerves, physiological anat- 

 omy of, 38 



general properties of, 43 



insensibility of, to ordinary 



impressions, 43 



expansion of, in the retina,. . 59 



Optic thalami, development of, 



399, 401 



Optic tracts, . 39 



Optic vesicles, 402 



Ora serrata, 55 



Orbit, 138 



Orgasm, venereal, 335, 336, 340 



Ossicles of the ear, 157, 200 



mechanism of, 209 



articulations of, 209 



development of, 403 



Otoliths, or otoconia, 214 



Ova, primordial, 274, 289 



Ovarian tubes, 274 



Ovaries, 269 



formation of the ligaments 



of, 423 



Overtones, 182 



Ovulation, independent of coitus, . 294 

 relations of, to menstrua- 

 tion, 295 



arrest of, during lactation, . . 454 



Ovules of Naboth, 283 



Ovum and ovulation, 288 



Ovum, structure of, 289 



vitelline membrane, 289 



vitellus, 290 



germinal vesicle and spot,. . 291 



discharge of, 292 



passage of, into the Fallo- 

 pian tubes, 296 



passage of, from an ovary 



into the Fallopian tube of the 



opposite side, 299 



disappearance of the germi- 

 nal vesicle, 354 



passage of, into the uterus, 



after fecundation, 358 



villosities of, 363 



