NERVE FILAMENTS. 153 



peculiar bodies in the retina and cochlea, and the 

 relations of the nerve-fibres to the nerve-cells, early- 

 attracted his attention. He repeated these investiga- 

 tions, and held that nerve filaments are provided both 

 centripetally and peripherally with current exciting 

 structures, by means of which alone their functional 

 currents can be initiated. 



