366 RESEARCHES ON IRRITABILITY OF PLANTS 



Automatic Pulsation of Desmodium 



141 

 142 



143 

 144 



145 



Uniform pulsations of Desmodium .... 294 



Determination of rate of movement at different phases 297 



Determination of significance of up-and-down movement 295 



Effect of internal hydrostatic pressure . . . 300 



Effect of load ........ 301 



Condition of Standstill and Revival of Pulsation 



146 

 147, 

 148 



149 

 150 

 151 

 152 

 153 

 154 

 155 



Gradual diminution of amplitude under isolation . .313 



Stoppage of pulsation brought on by depletion of energy 314 

 Single response to moderate induction shock, in leaflet at 

 standstill ........ 308 



Multiple excitation under tetanisation .... 308 



Single response to stimulus of light of brief duration . 316 

 Restoration of pulsation under continued action of light 307 

 Arrest of pulsation by ligature ..... 303 



Arrest of pulsation by the action of a cut . . . 304 



Determination of apex time ..... 309 



Refractory period of Desmodium . . . . .310 



Effect of Electric Stimulation on Automatic Pulsation of 

 Desmodium 



156. Incapability of tetanus . . . . . .318 



157. Extra pulsation induced by application of electric stimu- 



lation during diastole . . . . . -319 



158. Inhibitory effect of transmitted excitation on rhythmic 



pulsation ........ 320 



159. Augmentation of pulsation induced by transmitted , 



excitation ........ 321 



Influence of Temperature on Rhythmic Pulsation of 

 Desmodium 



160. Effect of lowering of temperature . . . . 325 



161. Effect of rapid cooling ...... 326 



162. Arrest of pulsation at low temperature . . . 326 



163. Effect of rise of temperature on amplitude and period . 327 



164. Effect of continuous rise of temperature . . . 329 



165. Effect of continuous rise and return to original tem- 



perature . . . . . . . . 330 



166. Effect of variation of temperature on systolic and diastolic 



limits ......... 330 



167. Arrest of pulsation at high temperature . . . 331 



