406 



Mr. T. Gray on the Electrolysis 







Table III. 



Number of 



Silver gain 



Copper gain 



Copper loss 



Remarks. 



experiment. 



in grammes. 



in grammes. 



in grammes. 





1. 



1-6084 



f -4774 

 1 -4836 



•4747 



•4748 





2. 



08042 



f -2391 

 1 -2373 



•2372 



•2372 





S. 



10059 



f -3053 

 1 -3073 



•2967 

 •2969 





4. 



•9042 



f -2688 

 1 -2728 







5. 



1-2063 



f -3589 

 1 -3547 



•3496 



Solution of Nitrate. 





•3574 



„ Sulphate. 



6. 



1-2041 



f -3546 

 J -3542 



•3557 1 

 •3504?J 



Different Sulphate. 





1 -3543 



•3573 



Same solution as be- 







I 





fore, with T ^ per 











cent, of sulphuric 











acid added. 



7. 







' -2359 



Not weighed ) 



Ordinary pure sul- 

 phate, T V per cent. 









•2361 



) 



acid added. 





Accidentally 



- 



•2360 



i» 



Burgoyne Burbidges 





lost. 









as above, £ per cent, 

 acid added. 









•2374 



n 



Ditto, stood for four 











days with a copper 

 plate in it and no 

 acid added. 



8. 







f -3550 



•3549 

 •3549 



>> 



"» \ 



Ordinary pure sul- 

 phate, no acid 

 added. 



Ditto, ditto, with T V 

 per cent. acid 





1-2067 



4 





J 



added. 









•3549 



j> 



Burgoyne Burbidges 

 with £ per cent, 

 acid added. 









t -3560 



n 



Ditto, with no acid 











added. 



9. 





r '2368 





Solutions the same as 









•2368 



it 



last, with the ex- 





•8053 



4 



•2367 



»» 



ception of the third, 



1 







•2369 



i) 



which had 5 per 



1 







. -2371 



>> 



cent, of acid added. 



