

CONTENTS XVl't 



CHAPTER XIV 



CURRENT OF DEATH RESPONSE BY POSITIVE VARIATION 



PAGE 



Anomalous case of response by positive variation Inquiry into the cause 

 Electric exploration of dying and dead tissue : death being natural 

 Determination of electric distribution in tissue with one end killed 

 Dying tissue shows maximum negativity, and dead tissue, positivity to 

 living Explanation of this peculiar distribution Response by negative 

 or positive variation, depending on degree of injury Three typical cases 

 --Explanation by theory of assimilation and dissimilation misleading 

 All response finally traceable to simple fundamental reactions . . 164 



CHAPTER XV 



EFFECT OF TEMPERATURE ON ELECTRICAL RESPONSE 



General observation of effect of temperature on plant Effect of fall and rise 

 of temperature on autonomous response of Desmodium Effect of frost 



I in abolition of electrical response After-effects of application of cold, in 

 Ettcharis, Ivy and Holly Effect of rise of temperature in diminishing 

 height of response This not probably due to diminution of excitability 

 Similar effect in autonomous motile response of Desmodium En- 

 hanced response as after-effect of cyclic variation of temperature Aboli- 

 tion of response at a critical high temperature . . . . .180 



CHAPTER XVI 



THE ELECTRICAL SPASM OF DEATH 



Different post-mortem symptoms Accurate methods for determination of 

 death-point Determination of death-point by abolition or reversal of 

 normal electrical response Determination of death-point by mechanical 

 death-spasm From thermo-mechanical inversion By observation of 

 electrical spasm : (a) in anisotropic organs : (b) in radial organs Simul- 

 taneous record of electrical inversion and reversal of normal electrical 

 response Remarkable consistency of results obtained by different 

 methods Tabulation of observations . . . . . ..-.". 192 



CHAPTER XVII 



MULTIPLE AND AUTONOMOUS ELECTRICAL RESPONSE 



Repeated responses under single strong stimulus Multiple mechanical 

 response in Biophytnm Multiple electrical responses in various animal 

 and vegetable tissues Continuity of multiple and autonomous response 

 Transition from multiple response to autonomous, and vice versa 



a 



