1877.] 



the Radicals of Electrolytes. 



225 



of 3 millims. each screwed together. The first cylinder had six and the 

 other two twelve divisions each. The amount of action was found by 

 weighing the sections before and after subjecting the cylinder to the 

 action of the electrolyzing fluid. 



In experiment 4, three cells of Grove were used, the time being two 

 hours ; in experiment 5, five cells for one hour ; and in 6, ten cells for 

 one hour. 



No. of section, counting 

 from the end opposite 

 the negative pole. 



Weight in grams of copper dissolved. 



4. 



5. 



6. 



1. 



•0923 



•0936 



•1590 



2. 



•0532 



•0428 



•0982 



3. 



•0368 



•0325 



•0745 



4. 



•0343 



•0277 



•0568 



5. 



♦0285 



•0226 



•0507 



6. 



•0241 



•0184 



•0464 



7. 





•0164 



•0391 



8. 





•0138 



•0341 



9. 





•0120 



•0271 



10. 





•0100 



•0280 



11. 





•0084 



•0202 



12. 





•0062 



•0168 



In experiment 4, signs of corrosion were noticeable to 48 millims. from 

 the end of the cylinder, while the deposit of copper reached 46 millims. 

 from the other end. In experiment 6, corrosion was noticeable also to 

 48 millims. from the one end, and deposition to 46 millims. from the 

 other end. From this it would appear that the electro-negative radical 

 spreads over a greater surface than does the positive radical, or that the 

 neutral line is not in the middle of the cylinder, but somewhat removed 

 towards the negative end, that is, where the deposition of the positive 

 radical takes place. I hope to return to this. 



The numbers in the columns 1, la, and 2 may be taken as showing 

 approximately the distribution of the positive radical or negative elec- 

 tricity on the respective silver strips, and the numbers in 5 and 6 that 

 of the negative radical or positive electricity on the copper cylinders, 

 which facts, graphically represented, give figures as in the diagram. 



The Society adjourned over Ascension Day, to Thursday, May 17. 



VOL. XXYI. 



E 



