756 PLANT RESPONSE 



Anisotropic organs : 



28. Inorganic response of compound strip 



29. Response of plagiotropic stem of Cucurbita 



30. Response of plagiotropic stem of Convolvulus 



31. Response by collapse of bifurcated Allium peduncle 



32. Response by uncurling of Passijlora tendril 



33. Response of spirally cut Alliuiu peduncle by uncurling 



34. Writhing response of spiral tendril of /'rt.w?/?c;-rt; 



Longitudinal Mechanical Response 



■AGE 



^5 

 86 



87 

 89 

 91 

 92 



35. Response of stem of Cuscuta 76 



36. Response of root of Bindweed 77 



37. Response of style of Datura alba 78 



38. Response of coronal filament of Passijlora . . . . . . 78 



39. Effect of age on excitatory contraction ...... 79 



40. Effect of season on responsive contraction 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 



Elecj roj'actii.e Response 



50. Electrotactik response in jMintosa 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 ag(?nts . . 1 79 



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 



