76^ PLANT RESPONSE 



Crocus, growlh-curvature by slimulalion of tip and growing region of shoot, 

 526, 527 



Citciirbita, diurnal variation of rate of transpiration in, 472 

 ,, initiation of growth-pulsation in, 426 



,, response of plagiotropic stem of, to thermal shocks, S6 



)> >> ,, ,, to light, 626 



Cusatta, response of stem of, 77 



Cynerece, response of filaments of, 69 



Czapek on localisation of gravi-perception at root-tip, 542 

 , , on radial pressure theory, 494 



Darkness, modification of sensitiveness in, 22, 50 

 Darwin, Francis, on effect of alternating stimulation, 685 



,, ,, on growth-curvature under light and gravitation, 494 



Darwin on localised geotropic sensibility at root-tip, 539 



,, on sensitiveness of radicle, 513 

 Darwinian curvature, 536 



,, theory, 749 



Dal lira alba, style of: death-discoloration of, 183 

 ,, ,, ,, death- response of, 160 



,, ,, ,, effect of light on growth, 571 



,, ,, ,, lowenng of death-point by fatigue, 1 85 



,, ,, ,, response of growing and stationary, 434, 435, 436 



,, ,, ,, response to thermal stimulus, 78 



,, ,, ,, tetanus in, 99 



Death-discoloration, 183 

 Death-point, constancy of, 173 



,, determination of, by electrical response, 149 



,. ,, by movement of uncurling, 165 



,j ,, by spasmodic lateral response, 150 



,, ,, by thermo-mechanical inversion, 161 



,, ,, by volumetric contraction, 156 



,, electrotonic effect on, 185, 186, 199, 207 



,, translocation of, by age, 170 



,, ., by fatigue, 185 



,, ,, by poison, 180 



,, ,, by unfavourable weather, 172 



Death-response, effect of chemical agents on, 179, 180 

 ,, in flowers, 181 



,, physiological nature of, 152 



Death-spasm in plants, 150, 155, 156 

 De Candolle, theory of heliotropism, 580 

 Desmodium gyrans, multiple response of, 293 

 ,, ,, polar excitation of, 292 



,, ,, seat of autonomous excitation in, 297 



,, ,, significance of up and down movement in, 330 



Desinodiiiin pulsation, diurnal record of, 470 



,, ,, incapability of tetanus, 346 



,, ,, effect of ana'sthetics on, 32; 



