372 



INDEX. 



Semicircular canals of ear, ii, 182 

 development of, ii, 294, et seq. 

 use of, ii, 191 

 Semilunar valves, i, 106 



functions of, i, 114 

 Semilunes of Heidenhain, i, 228 

 Sensation, ii, 158 

 color, ii, 223 

 common, ii, 158 

 conditions necessary to, ii, 159 

 excited by mind, ii, 159 



by internal causes, ii, 160 

 of motion, ii, 161 

 nerves of, ii, 136, et seq. 

 impressions on referred to periphery, 



ii, 79 



laws of action, ii, 80 

 objective, ii, 160 

 of pain, ii, 162 

 of pressure, ii, 165 

 special, ii, 159 



nerves of, ii, 137 

 stimuli of, ii, 82 



of special, ii, 82 

 subjective, ii, 83, 168. See also Special 



Senses, ii, 160 

 tactile, ii, 166 

 temperature, ii, 168 

 tickling, ii, 162 

 touch, ii, 162 

 transference and radiation of, ii, 83, et 



seq. 



of weight, ii, 166 

 Sense, special, ii, 158 

 of hearing, ii, 179. See Hearing, Sound, 

 of sight, ii, 196. See Vision, 

 of smell, ii, 175. See Smell, 

 of taste, ii, 168. See Taste, 

 of touch, ii, 162. See Touch, 

 muscular, ii, 165 

 organs of, development of, ii, 291 

 Sensory impressions, conduction of, ii,81 



by spinal cord, ii, 97 

 nerves, ii, 81 

 Septum between auricles, formation of, 



ii, 280 

 between ventricles, formation of, ii, 



280 



Serous fluid, i, 320 

 Serous membranes, i, 319 

 arrangement of, i, 319 

 communication of lymphatics with, i, 



294 



epithelium, i, 319 

 fluid secreted by, i, 320 

 functions, i, 320 

 lining joints, etc., i, 320 

 visceral cavities, i, 320 

 stomata, i, 294 

 structure of, i, 319 

 Serum, 

 of blood, i, 93 

 separation of, i, 66, 93 

 Seventh cerebral nerve, auditory portion, 

 ii, 185 



I Seventh cerebral nerve, facial portion, 



ii, 144 



Sex, influence on blood, i, 87 

 influence on production of carbonic 



acid, i, 193 

 relation to respiratory movements, i, 



186 



Sexual organs and functions in the fe- 

 male, ii, 234 

 in the male, ii, 246 



Sexual passion, connection of with cere- 

 bellum, ii, 119 



Sighing, mechanism of, ii, 199 

 Sight, ii, 196. See Vision. 

 Silica, parts in which found, ii, 342 

 Silicon, ii, 342 

 Singing, mechanism of, i, 201; ii, 56, et 



seq. 



Single vision, conditions of, ii, 229 

 Sinus pocularis, ii, 304 



urogenitalis, ii, 304 

 Sinuses of dura mater, i, 167 

 Sixth cerebral nerve, ii, 143 

 Size of field of vision, ii, 220 

 Skeleton. See Frontispiece. 

 Skin, i, 333 

 absorption by, i, 345 

 of metallic substances, i, 345 

 of water, i, 346 

 cutis vera of, i, 335 

 epidermis of, i, 333 

 evaporation from, i, 313 

 excretion by, i, 344 

 exhalation of carbonic acid from, i, 344 



of watery vapor from, i, 344 

 functions of, i, 342 

 respiratory, i, 345 

 papillae of, i, 335 

 perspiration of, i, 343 

 rete mucosum of, i, 334 

 sebaceous glands of, i, 336 

 structure of, i, 333 

 sudoriparous glands of, i, 337 

 Sleep, ii, 135 

 ; Smell, sense of, ii, 175 

 conditions of, ii, 175 

 delicacy, ii, 177 

 different kinds of odors, ii, 178 

 impaired by lesion of facial nerve, ii, 



-L^tTC 



impaired by lesion of fifth nerve, ii, 



141 



internal excitants of, ii, 179 

 limited to olfactory region, i, 176 

 relation to common sensibility, ii, 178 

 structure of organ of, ii, 176 

 subjective sensations, ii, 179 

 varies in different animals, ii, 178 

 Sneezing, caused by sun's light, ii, 84 



mechanism of, i, 200 

 I Sniffing, mechanism of, i, 201 



smell, aided by, ii, 176 

 Sobbing, i, 201 

 Sodium, ii, 342 

 i in human body, ii, 342 



