756 



PLANT RESPONSE 



Anisotropic organs 



28. 



29. 



34- 



Inorganic response of compound strip 

 Response of plagiotropic stem of Cucurbita 

 Response of plagiotropic stem of Convolvulus 

 Response by collapse of bifurcated Allium peduncle 

 Response by uncurling of Passiflora tendril 

 Response of spirally cut Allium peduncle by uncurling 

 Writhing response of spiral tendril of Passiflora 



13 

 85 

 86 



87 

 89 



9i 

 92 



Longitudinal Mechanical Response 



35. Response of stem of Cuscuta .... 



36. Response of root of Bindweed 



37. Response of style of Datura alba .... 



38. Response of coronal filament of Passiflora . 



39. Effect of age on excitatory contraction 



40. Effect of season on responsive contraction . 



76 



77 

 78 

 78 

 79 

 80 



Electric Response 



41. Response to direct stimulation ....... 32 



42. Response to transmitted direct stimulation . . . . . . 34 



43. Indirect hydrostatic and true excitatory response .... 37 



44. Electric test of differential excitability . . . . . . 38 



45. Response to moderate stimulation of tip of growing organ . 517 



46. Response to strong stimulation of tip .... 517,518 



47. Response to direct stimulation of growing region .... 518 



48. Response to moderate transverse stimulation . . . . . 519 



49. Response to strong transverse stimulation .... 519, 522 



Elecirotactile Response 

 50. Elecirotactile response in Mimosa stem 



260 



Death-response 



51. Determination of death-point by electrical method . . . 149 



52. Determination of death-point by spasmodic lateral response . . 150 



53. Determination of death-point by spasmodic movement of uncurling . 155 



54. Determination of death-point by sudden volumetric contraction . 156 



55. Determination of death-point from critical point of thermo-mechanical 



inversion ........... 168 



56. Constancy of critical point of inversion . . . . . . 169 



57. Modification of thermo-mechanical curve showing effect of age . . 170 



58. Thermo-mechanical curve of Mimosa . . . . 172 



59. Duplication of rigor-point in Mimosa by chemical agents . .179 



60. Translocation of death-point by unfavourable weather . . 172, 176 



61. Translocation of death-point by poisonous solution .... 180 



62. Translocation of death-point by fatigue 185 



