XXX COMPARATIVE ELECTRO-PHYSIOLOGY 



FIG. PAGE 



30. Increased Response with Increasing Vibrational Stimuli (Cauliflower- 



stalk) 40 



31. Responses to Increasing Stimulus obtained with Two Specimens of 



Stalk of Cauliflower 41 



32. Genesis of Tetanus in Muscle ........ 43 



33. Photographic Record of Genesis of Tetanus in Mechanical Response 



of Plants (Style of Datura alba} 43 



34. Fusion of Effect of Rapidly Succeeding Stimuli . . - . . 43 



35. Response of (a) quickly reacting Amaranth ; (b) of sluggish Colocasia 45 



36. Arrangement for Instantaneous Stimulation . . . . . . 47 



37. General Arrangement for Rheotomic Observation .... 47 



38. Enlarged View of Balanced Keys 49 



39. Curve showing Rise and Fall of Responsive E.M. Change, under 



moderate stimulation . . . . . . . . 51 



40. Response Curve from Rheotomic Observation in Stem of Amaranth 



under strong stimulation ........ 52 



41. Artificial Hydraulic Response of Mimosa 55 



42. Experimental Arrangement for obtaining Records on Smoked Drum 



of Responses given to Direct and Indirect Stimulation, by Leaf of 



Mimosa ............ 5^ 



43. Mechanical Responses of Leaf of Mimosa 57 



44. Mechanical Response of Biophytum to Thermal Stimulation . . . 58 



45. Record of Response of Mimosa Leaf, taken on a fast -moving drum . 60 



46. The Abnormal Positive preceding the Normal Negative in Mechanical 



and Electrical Responses in Biophytum . . . . . . 61 



47. Photographic Record of Electrical Response of Petiole of Cauliflower. 62 



48. Photographic Record of Electrical Responses of Potato-tuber . . 64 



49. Photographic Record of Electrical Response of Petiole of Fern . . 66 



50. Longitudinal Contraction and Retardation of Growth under Light in 



Hypocotyl of Sinapis nigra . . . . . . 73 



51. Record of Growth in Crinum at Temperature of 34 C. and 35 C. . 74 



52. Balanced Record of Variation of Growth in Flower-bud of Crinum 



Lily under Diffuse Stimulation of Light ..... 79 



53. Diagrammatic Representation of the Tonic Level .... 82 



54. Photographic Record of Abnormal Positive passing into Normal 



Negative Response in a Withered Specimen of Leaf-stalk of 



Cauliflower ........... 84 



55. Photographic Record of Staircase Response in Vegetable Nerve . 91 



56. Staircase Increase in Electrical Response of Petiole of Bryophyllum 



rendered sluggish by cooling . . . . . . . . 91 



57. Photographic Record of Uniform Responses (Radish) ... 92 



58. Photographic Record of Uniform Response in Petiole of Fern . . 92 



59. Record showing Diminution of Response, when sufficient Time is not 



allowed for Full Recovery ...... 93 



60. Fatigue in Celery .......... 93 



61. Fatigue in Leaf-stalk of Cauliflower . ...... 93 



62. Photographic Record showing Fatigue in Tin Wire which had been 



continuously stimulated for Several Days . . . . . . 94 



