INDEX. ' 



373 



Sodium, salts of in blood, i, 85 

 Solitary glands, i, 25s 

 Soluble ferments, ii, :>:>5 

 Somatopleure, ii, 259 

 Somnambulism, ii, 87 

 Sonorous vibrations, how communicated 

 in ear, ii, 186, et .vy. 



in air and in water, ii, ISO. A'Vr Sound. 

 Soprano voice, ii, 57 

 Sound, 



binaural sensations, ii, 195 



conduction of by ear, ii, 186 

 by external ear, ii, 186 

 by internal ear, ii, 191 



movements and sensations produced 

 by, ii, 196 



perception, 

 of direction of, ii, 194 

 of distance of, ii, 194 



permanence of sensation of, ii, 195 



produced by contraction of muscle, ii, 

 35 



production of, ii, 193 



subjective, ii, 195 

 Source of water, ii, 341 

 Spasms, reflex acts, ii, 103 

 Speaking, ii, 60 



mechanism of, i, 200; ii, 60 

 Special senses, ii, 159 

 Spectrum-analysis of blood, i, 92 

 Spectrum or ocular after-sensation, ii, 225 

 Speech, ii, 60 



function of tongue in, ii, 62 



influence of medulla oblongata on, ii, 



111 

 Spermatozoa, development of, ii, 247 



form and structure of, ii, 248 



function of, ii, 251 



motion of, ii, 251 

 Spherical aberration, ii. 212 



correction of, ii, 213 

 Spheroidal epithelium, i, 23 

 Sphincter ani, i, 263, 288 



external, i, 288 



internal, i, 263 



influence of spinal cord on, i, 288 

 Sphygmograph, i, 143 



tracings, i, 145, et seq. 

 Spinal accessory nerve, ii, 149 

 Spinal cord, ii, 90 



automatism, i, 105 



canal of, ii, 90 



centres in, ii, 103 



a collection of nervous centres, ii, 103 



columns of, ii, 91 



commissures of, ii, 91 



conduction of impressions by, ii, 97, et 

 seq. 



course of fibres in, ii, 95 



decussation of sensory impressions in, 

 ii, 99 



effects of injuries of, on conduction of 



impressions, ii, 99, et seq. 

 on nutrition, ii, 157 



fissures and furrows of, ii, 90 



Signal cord, functions of, ii, 97 

 of columns, ii, 99 



influence on lymph- hearts, ii, 103 

 on sphincter ani, ii, 103 

 on tone, ii, 104 



morbid irritability of, ii, 103 



nerves of, ii, 93 



reflex action of, ii, 100 

 in disease, ii, 102 

 inhibition of, ii, 101 



size of different parts, ii, 91 



special centres in, ii, 103 



structure of, ii, 90, et seq. 



transference, ii, 100 



weight, ii, 126 

 relative, ii, 126 



white matter, ii, 91 



grey matter, ii, 92 

 Spinal nerves, ii, 94, 150 



origin of, ii, 94 



physiology of, ii, 96 

 Spiral canal of cochlea, ii, 182 



lamina of cochlea, ii, 182 



function of, ii, 188 

 Spirometer, i, 189 

 Splanchnic nerve, i, 154, 252 

 Splanchnopleure, ii, 259 

 Spleen, ii, 1 



functions, ii, 4 



hilus of, ii, 1 



influence of nervous system, ii, 5 



Malpighian corpuscles of, ii, 3 



pulp, ii, 2 



stroma of, ii, 2 



structure of, ii, 2 



trabeculae of, ii, 2 

 Splenic vein, blood of, i, 88 

 Spot, germinal, ii, 237 

 Squamous epithelium, i, 20 

 Stammering, ii, 62 

 Stapedius muscle, ii, 181 



function of, ii, 191 

 Stapes, ii, 181 

 Starch, i, 231 



digestion of 



in small intestine, i, 267, 285 

 in mouth, i, 231 

 in stomach, i, 248, 285 

 Starvation, i, 219 



appearances after death, i, 220 



effect on temperature, i, 220 



loss of weight in, i, 219 



period of death in, i, 220 



symptoms, i, 220 

 Bteapam, i, 267 

 Stearic acid, ii, 339 

 Stearin, ii, 338 

 Stercorin, i, 278 



allied to cholesterin, i, 278 

 Stereoscope, ii, ~~~ 

 St. Martin, Alexis, case of, ii, 245 

 Stomach, i, 240 



blood- vessels, i, 244 



development, ii, 295, et seq. 



digestion in, i, 245 



