XXXIV COMPARATIVE ELECTRO-PHYSIOLOGY 



FIG. PAGE 



146. Crescographic Record of Multiple Growth-responses in Peduncle of 



Crocus 221 



147. Natural and Responsive Currents in Leaves ..... 224 



148. Burdon Sanderson's Fundamental Experiment on Dioncea Leaf . 229 



149. Parallel Experiment in Sheathing Petiole of Mtisa . . . . 229 



150. Positive Response of certain Leaves of Diomca .... 230 



151. Diphasic Response of Leaf of Diomca ' in its prime.' Positive followed 



by negative ........... 230 



152. Positive Response of same Leaf when 'modified' by previous 



stimulation ......... . 230 



153. Experimental Connections with Dioncea according to the second 



Experimental Method of Burdon Sanderson ... . . 233 



154. Response of Under-surface of Leaf of Dioncea, with Electrical 



Connections as in Fig. 153 ....... 233 



155. Photographic Records of Positive, Diphasic, and Negative Responses 



of Petiole of Musa depending on the Effective Intensity of 

 Transmitted Stimulus 238 



156. Electrical Response of Lamina of Nymphaa alba due to Transmitted 



Excitation from Petiole ........ 246 



157. Diagrammatic Representation by Du Bois-Reymond for Explanation 



of Electrical Response in Organ of Torpedo ..... 247 



1 58. Photographic Records of Responses given by Leaf of Coleus arornaticus, 



when both Surfaces are Excited Simultaneously by Thermal 

 Shock 248 



159. Experimental Arrangement for Rheotomic Observations . . . 252 



1 60. Records of Two Successive Responses in Leaf of Bryophylluin 



calycinum under Equi-alternating Electrical Shocks . . 253 



161. Response-curve from Rheotomic Observation on Leaf of Nymphaa 



alba ............ 254 



1 62. Series of Responses given by Leaf of Pterospermum subcrifolium to 



Stimulus of Equi-alternating Electrical Shocks .... 255 



163. Photographic Record of Responses of Carpel of Dillenia indica . 256 



164. Photographic Record of Normal Responses given by Pitcher of 



Nepenthe, under Equi-alternating Electric Shocks . . .256 



165. Responsive Currents in Lead Wire 264 



166. Flat Strip of Lead, of which lower Surface is Brominated . . 265 



167. Photographic Records of After-effect of Homodromous \ and Hetero- 



dromous \ Induction-shocks in prepared Strip of Lead . . . 266 



1 68. Photographic Record of Responses to Equi-alternating Electric 



Shocks in Prepared Lead Strip 267 



169. Response of Pulvinus of Mimosa to Equi-alternating Electric 



Shocks 268 



170. Experimental Arrangement for Determination of Excitatory After- 



effect of Equi-alternating Electrical Shocks 276 



171. Method of Direct Effect of Excitation by Equi-alternating Shocks . 280 



172. Excitation by Equi-alternating Shocks 281 



173. Photographic Record of Response of Petiole of Musa to Equi-alter- 



nating Electric Shocks, before and after Application of Chloroform 284 



