INDEX. 



Action -current, Bering's definition, 

 p. 230; Hermann's theory as to its re- 

 lation to du Bois' positive polarisation, 

 286, 321. 



After-currents, defined by du Bois, 164 ; 

 in nerve and muscle produced by break- 

 excitation, 319 ; combination of polarisa- 

 tion and excitation after -currents, 320. 



Anaphoric actions of current, accord- 

 ing to Jiirgensen and Quincke, 225. 



Anodic and cathodic polarisation, 

 Bering's definition, 230. 



Anodic negative polarisation, ex- 

 plained by inhibition of excitation, 332, 

 364. 



Anodonta, experiments on, in relation 

 to inhibition, 332 ; in relation to muscle 

 poisoned by veratrine, 361. 



Bernstein, experiments in confirmation 

 of Pfliiger's doctrine of electrotonus, 

 12 ; on rate of propagation of electro- 

 tonus, 544. 



v. Bezold, on effects of veratrine on 

 striated muscle, 333. 



Biedermann, on break-excitation, 55 ; 

 on break-tetanus, 74 ; on compensation, 

 94, 95 ; on currents which pass out of 

 transverse section of nerve, 135, of 

 muscle, 136; on make- and break-con- 

 tractions, 246, 250 ; on changes of form 

 of muscle poisoned by veratrine, 333 ; 

 the secondary electromotive phenomena 

 of veratrine muscle, 343 ; positive 

 cathodic polarisation in normal striated 

 muscles, 352 ; experiments on positive 

 cathodic polarisation, 352 ; discusses 

 du Bois' internal positive polarisability 

 of muscle, 361. 



Bilharz, experiments confirming Pfltiger's 

 doctrine of electrotonus, 8, 10 ; on struc- 

 ture of electrical organs, 370. 



Boiling, effect of on resistance of muscle, 

 190, of nerve, 220; on polarisation of 

 electrical organ, 214, 219. 



du Bois-Beymond, his law of excita- 

 tion, 49 ; on break-contraction, 52; 

 explains the differences in amount of 

 contraction on opening and closing 

 main circuit and nerve circuit by ex- 



ternal polarisation-current, 98 ; proves 

 that in a nerve or muscle through which 

 a current has been passed there is after- 

 wards a current in an opposite direc- 

 tion, 102 ; observation of positive po- 

 larisation, 105 ; on Galvani's funda- 

 mental experiments in the electro- 

 physics of nerve, 140; his 'paradoxical' 

 contraction discussed by Bering, 153- 

 157 > on secondary electromotive phe- 

 nomena in muscles, nerves, and elec- 

 trical organs, 163 ; observations and 

 experiments on Malapterurus brought 

 to Berlin alive, 369 ; Living Torpedos 

 in Berlin, first paper, 41 7 ; Living 

 Torpedos in Berlin, second paper, 



479- 



Break-contraction, contribution to the 

 theory of, by Tigerstedt, 49 ; Peltier's 

 views and du Bois-Reymond's criticism 

 of them, 51, 52; Pfliiger's and Munk's 

 theories, 53 ; Tigerstedt's experiments 

 to show that its amplitude varies with 

 the intensity of negative polarisation 

 of a motor nerve, 54-58 ; experiments 

 on. effect of changes in polarisability, 

 58-64 ; Tigerstedt's discussion of Griitz- 

 ner's experiments, 7 I- 74 5 Griitzner's 

 discussion of Tigerstedt's experiments, 

 106-109 ; break-contractions appear 

 earlier at break of the main circuit than 

 of the nerve circuit, in; discussion of 

 Bermann's conclusions on this subject, 

 112-124. 



Break-excitations in many cases make- 

 excitations, 93 ; called neuro-electric, 

 or additive, by Griitzner, 94 ; interfer- 

 ence of the nerve-current with the 

 make- and break-excitation of nerves, 

 131-135; break-excitation after-cur- 

 rents, 319. 



Break-tetanus, Engelmann's theory dis- 

 cussed by Tigerstedt, 70-74; Her- 

 mann's experiments, 322-325. 



Cavendish, observations on shock of 

 Torpedo discussed by du Bois-Keymond, 



Chauveau, theory of the physiological 

 action of electricity, 53. 



