1336 



INDEX. 



Registers of the voice, 1090 



Relaxation of muscular fibre an essential 

 part of contraction, 72, 269 



Rennet, curdling action of, on milk, 330 



Rennin, its direct action on casein, 331; 

 its formation in gastric cells, 352 



Reproduction, tissues and mechanisms 

 of, 1109; general features of, 1129; 

 female organs of, 1111; male organs 

 of, 1114 



Respiration, 424-512; pulmonary, circu- 

 lation aided by, 171; its mechanism, 

 425-439 ; work of the muscles of the 

 ribs in, 435 ; laboured, muscles of, 436 ; 

 expiration, the expiratory muscles, 437 ; 

 change of temperature of air in, 440; 

 change of aqueous vapour in, 440; 

 changes in blood caused by, 442 ; chem- 

 ical aspects of, 470 ; an involuntary act, 

 472 ; sequence of muscular contractions 

 in, 472 



, pulmonary, centre for, medullary, 



473 ; automatic action of, 474 ; influence 

 by afferent impulses, 476 ; duplexity of 

 its action, 479; effects of inflation and 

 suction, 482; double action of vagus 

 on, 483; nature of action, 484; two 

 lateral halves of, 484; influenced by 

 character of blood-supply, 485 ; by de- 

 ficiency of oxygen, 487, 1134 ; by excess 

 of carbonic acid, 488; by other changes 

 in the blood, 488; centre for apnoaa, 

 phenomena of, 489 



, Cheyne-Stokes, 490; affected by 



changes in atmospheric pressure, 491, 

 494 ; its effect on arterial pressure, 497 ; 

 artificial, its effect on the circulation, 

 503; impeded, its effect on heart-beat, 

 507; as affected by muscular work, 

 510; regulation of temperature by, 

 642; as affected by sleep, 1155 



, facial and laryngeal, 438 ; cutaneous, 



552 ; of muscle, 4(i9 ; of other tissues, 

 467; of the embryo, 1124; placental 

 compared with branchial, 1126 



Respiratory quotient in herbivora and 

 carnivora compared, 629 



Retina, see Eye, retina 



Rheometer of Ludwig, 172 



Rheoscopic frog, 102; current of action 

 shewn in, 107 



Rhythm, secondary respiratory, 490 



Rhythmic changes of calibre in artery, 

 262 ; beat of heart, spontaneous nature 

 of, 239; beat of cardiac substance, 300; 

 contractions of uterus during preg- 

 nancy, 1136 



Ribs, movements of, in respiration, 434, 

 435 



Rigor mortis, characteristics of, 86, 87; 

 development of carbonic acid during, 

 91-95; conversion of myosinogen into 



myosin during, 95; progressive order 



of, 128 ; accession of heat at onset of, 



641 



Rima glottidis, the, see Glottis 

 Ritter Valli law, 126 

 Rods, of retina, 922, 926 

 Roots of spinal nerve, 141, 677 

 Rosenthal's calorimeter, 635 

 Round ligament of uterus, contractions 



of, 1118 

 Roy, sphygmotonometer of, 220, 222; 



perfusion cannula of, 240 

 Roy and Adami, cardiometer of, 199, 202 

 Roy and Rolleston, method of recording 



endocardiac pressure, 193, 194 



Sacculi of large intestine, peristaltic con- 

 tractions of, 381 



Saline solution, normal, defined (foot- 

 note), 16 



Saliva, characters and properties of, 313 ; 

 its properties, 314; its amylolytic ac- 

 tion, 316, 387; characters of parotid, 

 submaxillary, sublingual, and mixed, 

 318 ; amount daily secreted, 332 ; reflex 

 secretion of, 333 ; centre for secretion 

 of, in medulla oblongata, 335 ; of dog, 

 mechanical use of, 387; of the babe, 

 1146 



Salivary glands, venous pulse observa- 

 ble in, 236 



Salts, neutral, needed for formation of 

 fibrin, 26 ; calcium, clotting as affected 

 by, ib. ; pulsation of ' washed-out ' 

 heart as affected by, 259; in food- 

 stuffs, 312; absorption of, 414; as 

 food, 630; importance of, for nutri- 

 tion of nervous system, 630; essential 

 to life of muscle, 652 ; in diet, 661 



Santorini, cartilage of, 1070, 1078 



Sarcolemma, structure of, 86 



Scaleni muscles, the, their service in res- 

 piration, 435 



Scheiner's experiment, 847, 873 



Schlemm, circular canal of, 969; passage 

 of aqueous humour by means of, 974 



Sclerotic coat of eye, development of, 837 



Secretion of saliva, nervous mechanism 

 of, 332 ; of gastric juice, 338 ; changes in 

 gland constituting act of, 340; changes 

 in albuminous cells, 342; changes in 

 mucous cells, 344; by central cells of 

 stomach, 346; special substances elab- 

 orated during, 350 : of pancreatic juice, 

 365 ; of bile, 3f!6 ; of urine, 524 ; glome- 

 rular and tubular in the kidney com- 

 pared, 534 ; glomerular, its nature, 535 ; 

 of sweat, 551 ; mechanism of, 555 ; of 

 milk, 615 



Secretions, carbonic acid in, 470; their 

 constituents manufactured by glandu- 

 lar action, 538 



