Aluon — The Insulating Properties of Erinoid. 



343 



From the results of Tables 3, 4, 5, and 6, and the curves of Fig. 2, the 

 following may be deduced : — 



1. The insulation resistance of unmachined fibre is only slightly dependent 

 upon the value of the applied voltage. Table 5. 



fqiq 



M 



100 



aoo 



300 



VCO 



i'oo 



Applied Voltage. 



Fig. 2. — Insulation resistance and applied voltage ; R is for red ; B for blue ; M for black ; 

 P for white erinoid. In these cases the surfaces of the sample were unmachined 

 and mercury electrodes were used. 



