INDEX 583 



Inhibition, galvanic, 153; heart, 559; polar, 155 ; reflex of 

 heart, 567 ; ventricular, 524. 



Inhibitory nerves of heart, 558. 



Inhibitory centre, 564. 



Interrupter, 62, 303. 



lous, 28. 



Iris, accommodation, 474. 



Irritability, 169 ; definition, 9 ; different points of same nerve, 

 180; flexor and extensor nerves, 177; muscle, independent, 

 169 ; nerve greater than muscle, 179 ; separable from conduc- 

 tivity, 172. 



Isometric contraction, 352, 355 ; method, 349. 



Isotouic method, 349. 



Isotony, 20. 



KEY, short-circuiting, 46 ; simple, 45 ; rocking, 50. 



Kinetic theory, 12. 



Knee jerk, 375. 



Kymograph, 79; long paper, 81. 



LANTERN, 404. 



Latent period of muscle, 334. 



Lens, accommodation, 474, 475; concave, 422; convex, 416; 



numbering, 435. 



Lever, light muscle, 86 ; heavy or rigid, 351 ; writing, 87. 

 Light, spectrum, 413. 



Line of fixation, 463 ; focal, 427 ; force, 57. 

 Load, influence on contraction, 537. 



MAGNETIC field, 57 ; induction, 57. 



Make or break current excluded, 70 ; stimuli, 67. 



Manometer, mercury, 523. 



Mechanical stimulation, 166. 



Mirror, concave, 405 ; convex, 410 ; plane, 403. 



Mitral incompetence, 552. 



Moist chamber, 95. 



Molecular hypothesis, of nerve and muscle current, 298. 



Monopolar stimulation, 111. 



Motor points, 128. 



Muscarine, action on heart, 564. 



Muscle, action current, 300 ; clamp, 8 ; curve, 333 ; demarca- 

 tion current, 287 ; form affects stimulation, 156 ; left hind 

 limb of frog, 6, 99; lever, 86, 351; tonus, 389; turbid and 

 clear, 335 ; warmer, 343. 



Myomeres, 298. 



Myopia, 430 ; angle of, 464 ; measurement, 493. 



