INDEX. 



935 



Respiratory changes in the blood, 591 



curve, 581 



movements, modified, 604 



organs of birds, 568 

 of fishes, 566 

 of reptiles, 568 

 types of, 563 



volumes of air, 585 

 Restiform bodies, 811 

 Reticulum, functions of, 376 



structure of, 318 

 Retina, functions of, 867 



structure of, 865 

 Retinal purple, 868 

 Rheoscopic frog, 722 

 Rhodopsm, 868 

 Rhythm of respiration, 579. 

 Ribs, movements of, in respiration, 575 

 Rigid tubes, flow of liquids through, 518 

 Rigor mortis, 704 

 Rising up and lying down, mechanism of, 



754 



Roots and bulbs, composition of, 184 

 Rotatory joint, 730 

 Rumen, functions of, 374 

 Ruminants, convolutions of the brain of, 

 805 



dentition of, 258 



gastric digestion in, 374 



larynx of, 761 



respiratory movements of, 582 

 Rumination, 316 w 



changes of food in, 323 



influence of nervous system on, 330 



structure of, 317 

 Ru :m-ing in quadrupeds, 749 



mechanism of, m men, 738 

 Rtr.OLl 

 K/e residue, 181 



SacHiarates, 119 



Saccharose, 119 



Saliva, centre for secretion of, 817 



chemical composition of, 271 



course of, 270 



physiological uses of, 287 



quantity of, 286 



Salivary glands, experiments on, 295 

 histological changes in, 305 



secretion, 268 



characteristics of, 284 

 mechanism of, 293 

 Salts, absorption of, 454 



amount of, in fodders, 679 



influence of, on nutrition, 678 



nutritive, 192 

 Saponification, 121 

 Sarkin, 663 

 Scalene muscles, ' action of, in inspiration, 



577 



Schleiden's cell doctrine, 15 

 Schultze's test for reaction of proteids, 92 

 Schwann's cell doctrine, 15 



Sclerotic, 849 



Sebaceous secretion of the skin, 655 



Secretion of bile, 391 



of gastric juice, 356 



of milk, 609 



of sweat, 652 



of tears, 658 



of the skin, sebaceous, 655 



parotid, 274 



salivary, 268 



sublingual, 283 



submaxillary, 279 

 Secretory phenomena, 793 

 Section of spinal cord, results of, 800 

 Segmentation of mammalian ovum, 19 

 Semicircular canals, 877 

 Semilunar valves, action of, 513 

 Seminal fluid, 913 

 Sensation, 837 

 Sensations, tactile, 897 



visual, 864 

 Sense of hearing, 875 



of sight, 846 



of smell, 841 



of taste, 893 



of touch, 897 

 Sensibility, conditions of, 838 



general and special, 837 

 Sensitive plant, 71 



motions of, 71 



Sensory impulses, paths of, 801, 827 

 Serum-albumen, 92 



of blood, 489 



Setchenow's inhibitory centre, 793 

 Sheep and goat, urine of, 640 

 Sheep, dentition of, 259 



fat, 123 



food required in fattening, 687 



normal foods for, 690 



prehension of food in, 235 

 Shell-membrane of egg, formation of, 22 

 Sighing, 604 

 Sight, sense of, 846 

 Silicon, 136 

 Sinus venosus, 503 

 Sitting, mechanism of, in man, 733 

 Skin as a heat regulator, 651 



as an excretory organ, 651 



functions of, 651 



sebaceous, secretion of, 655 

 Smell, intensity of, 846 



sense of, 841 

 Sneezing, 605 



centre for, 816 

 Soaps, 121 

 Sobbing, 605 

 Socket-and-ball joint, 730 

 Sodium carbonate, 129 



chloride, 128 



phosphate of, 130 



sulphate, 135 

 Solids, prehension of, 226 

 Solipedes, gastric digestion in, 368 



