INDEX. 



385 



Plethysmograph, amount of blood in 



parts determined by, 332 

 Plexus, brachial, constrictor and dilator 



fibres in, 333 

 Polarizing current, irritability of nerve 



affected by, 130 



Potassium salts in cell-tissue, 41, 51 

 ,, ,, in muscle-tissue, 102 

 Pressure, arterial, see Blood, pressure 

 Primitive sheath of nerve fibre, 115 

 Primordial utricle, 4 

 Proteids, general composition of, 17 

 Proteid material, a constituent of living 



matter, 43 

 Protoplasm, definition of, 4 



differentiated," 4 

 "undifferentiated," in the 



embryo, 36 

 ,, primordial, spontaneous 



movement of, 304 

 Pseudopodia of the white corpuscles, 



38 

 ,, ,, movements effected by 



means of, 168 

 Pulse, the, 203, 269 



methods of recording, 269-273 

 artificial, 273, 276 

 characters of, 276 

 disappearance of, 278 

 dicrotism in, 280-286 

 anacrotic, 280, 287 

 venous, 287 

 Pulse-volume, 250, 267 

 Pulse-wave, changes of, in the arteries, 



277 

 velocity of the, 279 



length of the, 279 

 Pus corpuscles, their formation, 45 



Radial artery, tracings of the pulse in 



the, 271-273, 276, 281 

 Banvier, node of, in nerve fibre, 117 

 ,, division of nerve fibre 



takes place at, 121 

 Reflex actions, general features of, 182- 



185 

 ,, ,, not always proportioned 



to stimulus, 182 



,, ,, often purposeful in cha- 

 racter, 184 



,, ,, vaso -motor, 340 

 Refractory period of cardiac contraction, 



304 



Relaxation of muscular fibre an essential 

 part of contraction, 76, 90, 153, 169, 

 331 

 Remak, ganglion of, in heart of frog, 



294 

 Respiratory movements, circulation 



aided by, 221 

 Rheometer of Ludwig, 222 

 Rheoscopic frog, 113 



,, ,, current of action shewn 



in, 125 



F. 



Rhythmic changes of calibre in artery, 



325 



beat of cardiac substance, 366 

 Rigor mortis, characters of, 98 



,, development of carbonic 



acid during, 102-106 

 ,, ,, conversion of myosinogen 

 into myosin during, 106 

 ,, progressive order of, 149 

 ,, ,, as compared with contrac- 

 tion, 155, 156 

 Ritter Valli law, the, 146 

 Roots of spinal nerves, 173 

 Roy, sphygmotonometer of, 270, 272 



,, perfusion cannula of, 297 

 Roy and Adami, cardiometer of, 249, 



252 



Roy and Rolleston, method of record- 

 ing endocardiac pressure of, 243, 

 244 



Saline solution, normal, defined, 16, 



note 

 Salts, calcium, clotting as affected by, 



26 



,, ,, pulsation of "washed 



out" heart as affected 

 by, 321 



Sarcolemma, structure of, 86 

 Self-induction, 66 



Semilunar valves of heart, their struc- 

 ture, 199 



,, ,, their action, 234 



,, ,, dicrotic wave as form- 



ed by closure of, 

 284, 285 



Septal ganglia of heart of frog, 295 

 Serous fluids, artificial clotting of, 23 

 Serum, 15 



,, chemical composition of, 18-21, 



50 



,, complex nature of, 303 

 Sheath, primitive, of nerve fibre, 117 



,, of arteries, 197 

 Shock, induction, 63 



,, in operation, results of, 347 

 Short-circuiting, 62 

 Sodium chloride, its action on plasma, 



22, 26 



Somatic division of spinal nerve, 173 

 Sounds, musical, of contracting muscle, 



142, 240 



of the heart, 238-241, 263, 266 

 Sphygmograph, Dudgeon's, 271 

 Sphygmoscope, 270 

 Sphygmotonometer of Roy, 272 

 Spiral cells, 179 

 Splanchnic division of spinal nerve, 



173, 333 



,, ganglia, 178 



Spleen, the, possible formation of red 



corpuscles in, 38 



,, rhythmical action of muscle 

 fibres in, 221 



25 



