Electrical Conductivity of Flames. 483- 



was put on the cathode. The K 2 C0 3 on the cathode fused 

 and volatilized at a very constant rate, so that the current 

 remained almost constant as long as any salt was left. 



Fig. 5. 



8000 r 



(I-5-3XI0* 

 7000 



6000 



5000- 



4000 



3000 



1000 



1000 



1 8 CMS. 



It will be seen that the current falls oft' rapidly as the 

 distance between the electrodes is increased, this effect being 

 much more marked than in the case of the flame alone. 



Fig, 



600 



VOLTS^K 



400 



200 



1 8 CMS, 



1 4 6 8 10 12 

 Fig. 6 shows the effect of putting salt on the cathode on 

 the potential gradient. It will be seen, on comparing with 

 fig. 2, that the cathode fall is greatly diminished, while the 

 uniform gradient between the electrodes is increased. 



2 L2 



