340 



Scientific Proceedings, Royal Dublin Society. 



Table 3. 



Table 4. 



White erinoid. Thickness, 0-175 cm. Temp. 33-4° C. 

 Complete voltage cycle. 



The first set of values in Table 4 was taken for the current going from 

 the outside to the inside of the tubular sample ; the current was then reversed 

 and the second set taken ; finally the current was again reversed and the 

 third set taken. 



The results obtained for red fibre are given in Table 5, 



