8 3 6 



INDEX 



Size of particles and amount of precipitating 



ion, 94 

 Skin of frog, electrical change in, 0.~>>S 



receptors, 514 

 Sleep, 506 

 Slide rule, 40 



Slyke, van, NH. 2 method, 263 

 Smell, sense of, 511, 515 

 Smoke, 77 

 Smooth muscle, 436 



action of electrolytes on, 215 



electrical change in, 652 



response of, to stretching, 437 



tonus of, 436 



Smoothed curves, 40 



Snail's heart, action of calcium on, 215 



Snake poisons, 360 



Soap film, 48 



gels, formation of, 99 



solution, 48 



Sodium, action of, on heart muscle, 207, 209 

 on muscle, 217 



acts on cell membrane, 142 



bicarbonate in relation to carbon dioxide 



tension, 618 



chloride, use of, 354 



ions, effect of, on permeability, 124, 125 



salts reabsorbed in kidney, 354 



Sorensen's NH 2 method, 263 

 Sol and gel, 78 



Solid solutions, 67 



state, 85 

 theory of, 29 



Solids, surface tension of, 52 



Solubility in membrane substance, 112, 113 



in surface layer, 53, 54 



nature of, 229 



of large and small particles, 52, 78 



of oxygen in lung epithelium, 629 



of salts in colloidal solutions, 105 

 Solution pressure, 190 



tension of colloids, 95 



volume, 235 

 Solvation, nature of, 229 



Solvent power as increased by water, 132 



Somatic nerves, 484 



Sorbose bacterium, 249 



Sound pattern theory, 526 



Sounds of the heart, 675 



Source of energy for electrolytic dissocial ion, 



180 

 Space occupied by molecules in a gas 



(Larmor), 149 



by molecules in a liquid, 150 



Specific adsorption, 60 



capillary constant, 52 



conductivity, 175 



dynamic action of protein, 247, 265 



staining of cell constituents, 12, 13 

 Specificity, 726 



of catalysts, 310 



Specificity of on/ vines, 310. ;{-_'s 



of oxidases, 585 



Spectra of luminous animal*. .V.tf. 

 Spectrophotometry, 551 

 Speech, 482 



Sphincter muscles, 366, 367, 368 

 Spinal animal, 488, 502 



cord, isolated, (in/ 



induction, immediate, 490 

 successive, 491, 497 



reflexes, 488 



shock, 416 

 Spiritus nitro-wreus, 601 



Splanchnic nerve, action of, on intestine, 



368 



Sponges, reaction of, to stimuli, 464 

 Sprat on experiments, viii 

 Spread of stimuli in cortex, 506 

 Square root law, 315 

 Stable colloids, 95 



Stability of colloidal solutions, 87, 93 

 Staining, 70 



effect of electrolytes on, 71 



of histological preparations, object of, 9 



of nerve fibres, 71 



of Nissl bodies, 71 



with methylene blue, 10 

 Staircase phenomenon, 448, 451, 453 

 Stalagmometer, 49 



Star-cells, 366 



Starch as statoliths in plants, 530 



hydrolysed by acid, 301 



iodide, an adsorption compound, 69 

 Starfish "smelt" by scallop, 515 

 Starvation, 267 



State of affecting response, 21 



Static surface tension, 56 



Statistical nature of kinetic theory, 87 



Statocysts, 527 



Stepping, 491, 498 



Stereotaxic instrument, 482 



Sterilisation in relation to water, 240 



of food in stomach, 374 

 Stimulation of nerves, methods of, 380, 381 

 Stomach, killing of microbes in, 374 

 Storage of carbohydrate, 280 



of fat, 280 



of protein, 280, 281 

 Streaming of protoplasm, 19 



Stretching of nerve, effect of, on rate of 



conduction, 396 



Striated muscle, structure of, 437 

 String galvanometer, 638, 639, 640 

 Stroma of blood corpuscles, 134 

 Strong and weak acids and bases, 197, 



219 



electrolytes, nature of, 181, 182 

 Strontium antagonised by calcium, 216 

 Strophanthin, mode of action of, 725 

 Structural details, ix 



formulae, 40, 41 



