750 COMPARATIVE ELECTRO-PHYSIOLOGY 



Dillenia indica, reversal of normal response, under feeble stimulation, 328 

 Direct and after-effect, methods of, 275 



,, ,, of light, in plant, 409-414 



,, in retina, 427-43 



Dissociation and delayed pain, 675 



,, of complex sensation, by depression of conductivity, 674 



by lag, 675 



Dose, effect of, oh excitability, 136 

 Drosera, response in digestive leaf of, 342, 343 

 Drugs, modification of effect by tonic condition, 641 



,, significance of effect of dose, 639, 640 

 Drying, effect of, on nerve, 539 

 Du Bois-Reymond on current of rest in frog's skin, 288 



,, ,, on organ current, 260 



,, ,, on positive and negative polarisation, 246 



,, ,, pre-existence theory of, 149 



Dying tissue, negativity of, 169, 173 



EBBINGHAUS, on rate of forgetting, 678 

 Eel, electric response of, 285 

 Electric discharge under excitation in leaf organ : 

 ,, in Bryophyllum, 253 

 ,, in bulb of Uriclis lily, 257 

 ,, in Coleus, 248 

 ,, in Mimosa, 268 

 ,, in Musa, 284 

 ,, in Nymphtm, 246 

 in pitcher of Nepenthe, 256 

 ,, in Pathos, 286 

 ,, in Pterospermuiii, 255 

 Electric distribution, explanation of, in dying and dead tissue, 173 



,, ,, in plant and muscle cylinder, 150, 156 



Electric organ, anterior and posterior surfaces, 242 

 ,, ,, laws of response in, 248 



,, ,, theories of, 260 



Electrical response, in absence of mechanical, 20, 220 

 ,, ,, laws of, in anisotropic organs, 109 



,, ,, ,, in isotropic organs, 75 



Electrotonus, Bernstein's polarisation decrement, 562 



,, conversion of qualities of sensation by, 670-672 



,, extrapolar effects in plant nerve, 561 



,, Hermann's polarisation increment, 563 



,, law of variation of conductivity under, 568 



,, ,, ,,. excitability under, 571 



,, modification of conductivity by, 566-568 



,, variation of excitability by, 569 



Energy, hydraulic transmission of, 69 

 Engelmann on current of rest in skin, 288 

 Equi-alternating shocks : their advantage, 274 



