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 . . . y . . . . 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 . . . . . " . ." . ... . 56 



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 .'..'.. 9< . . , . . . 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 



