1876.] 



Mr. A. Tribe on Electrolysis, 



313 



poles of each suspended conductor become closer together and less capable 

 of doing chemical work. 



This is well shown by the subjoined results of experiments made to 

 test the influence of the position of the insulated conductors upon their 

 activity. The same apparatus was used as for the last experiment, the 

 positions of the strips being as represented in the Table (side by side with 

 the results). 



Direction. 



KCy used. 



Direction. 



KCy used. 



1 



4-8 c.c. 





2-0 c. c. 



1 



2-4 



1 



2-4 



/ 



0-9 



1 



1-5 



— 



0-0 



\ 



0-6 



1 



1-3 



1 



1-3 





0-0 



\ 



trace 



\ 



trace 



/ 



trace 



1 



1-7 



1 



1-3 



_ 



0-0 





0-0 



/ 



0-6 



1 



1-3 



1 



2-4 



1 



3-2 



1 



3-0 



/ 



3-3 



The positive battery-electrode is supposed to be at the top and the 

 negative at the bottom of the columns respectively. 



A glance at these numbers well shows the influence of direction, and 

 at the same time reveals the fact that a suspended rigid conductor, sur- 

 rounded by an electrolyzing fluid, may transmit the electric power as 

 though it were transparent to its influence. 



The effect of varying the length of the conductor is illustrated by 

 Experiment VII., that of conductivity by Experiment VIII., and that of 

 chemical activity by Experiment IX. 



Experiment VII. — The same arrangement was employed as in Experi- 

 ment III., the silver strips \ inch in diameter being placed in a post 

 midway between the electrodes, and each allowed to remain in the electro- 

 lyzing fluid for thirty minutes. The deposited copper was determined 

 as before. 



Length of 

 Silver Strip. 



2 inches 



3 „ 



Expt. I. 

 KOy used. 



Expt. II. 

 KOy used. 



7-6 c. c. 



8-4 c. c 



18-2 



17-4 



Experiment VIII. — On three posts | inch distant were placed : — 1st, glass ; 

 2nd, charcoal ; 3rd, platinum. These were then placed between copper 

 electrodes 3 J inches apart, the whole being immersed in solution of 

 copper sulphate. On connexion being made with the battery, gas at 

 once escaped from the positive ends of the metallic strip, while none 

 was visible on either the glass or the charcoal. Upon removing the 



YOL. XXIY. 2 A. 



