Phil. Mag. Ser. 6, Vol. 27, PL XI, 



HoO bands 



ir ; o. Sulphuric Acid]: -03 % 

 Hvdrate: '1 %.) 





2 



■-3 .« O 



53 a 



Ph 



Current in 

 amperes. 



Time of 

 Exposure 



c 

 o 



'■§ g 



5- .2 



» A 

 2 ° 

 § m 

 o 



a 



+ 



1720 



•0244 15 



•001 o/ 



:b 



+ 

 + 



700 



■0400 15 



•005 'Vo 



c 



590 



•0402- 15 



•01 o/ n 



4 



+ 



400 



0414 17 



•05 o/ 



e 



+ 



370 



•0424 15 



■l°/o 



/ 



+ 



200 



•0475 15 



•5% 















a 



+ 



610 



■0392 15 





b 



250 



0449 15 

















- 



3200 



•0025 15 

 •0368 15 





b 



- ; 256-300 





c 



-' 



150-200 



•0386 , 15 

















a 



- j ? 



•0044 ! 11 





Where two values are given for 

 the Potential Difference, the 

 higher value occurs during the 

 " bubble formation." 



