INDEX 



Acellular organ, responsive curvature of, 506 

 Acid, chemo-tropic action of, 548 



,, effect on mechanical response, 136 

 Acid and alkali, antagonistic action of, on cardiac pulsation, 351 

 ,, ,, ,, ,, on chemo-tropic response, 548 



,, ,, ,, ,, on Desmodium pulsation, 352 



,, ,, ,, ,, on growth, 484 



Additive effect, 95 



After-effect, detection of absorbed stimulus by negative, 459 

 ,, factors modifying, 468 



,, persistence of, 310 



,, positive and negative, 457 



,, ,, ,, constancy of sum of, 460 



Age, effect of, on contractile response, 79 



,, ,, on thermo-mechanical inversion, 171 



Alcohol, effect of, on Desmodium pulsation, 325 

 ,, ,, on growth, 482 



,, ., on mechanical response, 133 



All or none ' principle in response of Biophylum, 272 

 ,, ,, ,, cardiac tissue, 353 



Allium, death-response of, 157 



,, mechanical response of, 87 

 Anesthetics, action of, on autonomous response, 324 

 ,, ,, on conductivity, 220, 229 



,, ,, on excitability, 220 



,, ,, on mechanical response, 134, 135 



,, ,, on receptivity, 224 



An-electrotonus, 232 

 Anisotropy, induction of, by cold, 82 

 ,, ,, by fatigue, 83 



,, ,, by light, 84 



,, necessary condition for lateral response, 44 



Annual rings, 474 

 Anode, effect of, on growth, 556 

 Anodic block, 233 

 Arisama, curious response of, 533 

 Arsenic, fatigue -reversal in, 119, 575, 653 



