CONTENTS. 



PAGE 



1. Introduction ............ 479 



2. On the electromotive behaviour of the skin of electrical Fishes . . 481 



3. On polarisation of the organ by alternating Currents .... 489 



4. An attempt is made to compare the Negative Polarisation due to the* 



closing shocks of an inductorium with that due to the opening 

 shocks separately .......... 492 



5. Continued discussion of the results of Polarisation of the organ by 



alternating Currents 497 



6. Unsuccessful experiments to produce relatively positive Polarisation by 



Heterodromous Currents 498 



7. The apparent Irreciprocity of the Conduction of the electrical organ 



increases with the Current Density ...... 503 



8. The apparent Irreciprocity of Conduction in the electrical organ has its 



seat in every transverse slice of the preparation, and increases with 



the length of the piece of columns which is traversed by Currents . 505 



9. The question, whether the appearance of Irreciprocal Conduction in the 



organ depends upon polarisation or Conduction cannot be answered 



by the introduction of additional resistance 510 



10. Measurements of the resistance of the electrical organ of the Torpedo . 514 



11. Dependence of the Irreciprocal Resistance and of the Eesistance of the 



organ in general upon its condition as to vitality . . . .520 



12. The conduction of the electrical organ, when investigated by means of 



constant Currents .......... 521 



13. On the Law and Nature of Irreciprocal Conduction in the electrical 



organ 524 



1 4. Teleology of Irreciprocal Conduction in the electrical organ . . . 528 



15. Positive Polarisation in its dependence upon the density of the Polar- 



ising Current. One case of Relatively Positive Polarisation by the 

 Heterodromous Current 535 



16. On Conduction in both directions in the electrical Nerves of the Torpedo . 537 



17. On the Secondary Electromotive Phenomena in the electrical Nerves of 



the Torpedo ... 539 



