vi. Contents. 



LECTURE IV. 



PAGES 



Polar effects. Pfluger's law. Illustrated by experi- 

 ments on Man. 



Electrolytic dissociation. Electrolytic counter-current. 



Internal polarisation. 



Polarisable core-models. Extra-polar currents in core- 

 models. 



Extra-polar currents in frog's nerve and in mammalian 



nerve 76-100 



LECTURE V. 



ELECTROTO NUS. 

 " An." and " Kat." Influence of ether and chloro- 

 form. Physiological and physical effects. The 

 electro-mobility of living matter. Relation between 

 polarising and extra-polar currents in nerve. 

 Strength. Distance. Von Fleischl's deflection. 

 Action currents are counter-currents. Extra-polar 

 effects in mammalian nerve ... ... ... ... 101-123 



LECTURE VI. 



ELECT ROTON US (continued). 



Influence of acids and alkalies. Influence of carbonic 

 acid and of tetanisation. Influence of variations 

 of temperature. 



The action-currents of polarised nerve. Bernstein's 

 electrotonic decrement. Hermann's polarisation 

 increment ... ... ... ... ... ••• 124-144 



