194 Mr. J. Daniel on the Polarization upon a 



Table II. (continued). 

 3 per cent. H 2 S0 4 ; v = 6'3 ohms. 



fll gold. Long time readings. Gas formed. Gold oxidized. 



1 0-174 0-089 0-06 0-036 0018 0-009 0-004 0-002 



x 2-78 2-66 2-65 2-61 2-55 2'49 238 2-30 



#2 gold. Long time readings. Gas. 



1 0-156 0-091 0061 0-037 0-018 0-009 0-004 0-002 



x 2-67 2-59 2-61 2-56 2-49 2-43 2-43 2-28 



#7 gold. Circuit closed 2 -5 hours. No gas. x too small to measure. 



KOH; sp.gr. = 1-11. 



#7 gold. No gas. No polarization. 



NaCl ; sp. gr. = l*12 ; v = 5*5 ohms. 



#4 platinum. Very constant in very short time. 



1 0-176 0-089 0035 



x 3-71 3-58 3-31 



#7 gold. No gas. No polarization. 



#2 aluminium. No gas. No polarization. 



NaCl; sp. gr. = l*09 ; v=6*24 ohms. 



#2 platinum. Very constant. 



I 0-177 0089 0-036 



x 3-34 3-00 1-55 



GuS0 4 ; sp. gr. = l'12 ; # = 24*5 ohms. Cu electrodes. 



#1 platinum. Very constant, and for I=0'18 gave #=2'19. 

 #7 Au, #3 Pt, and #2 Al. No polarization. %\ Ag dissolved. 



Table III. — Change of x with time. 

 1 = 0*175. H 2 S0 4; 30 per cent.; t>==l"l ohms. 



mSuto. } lm 3 ' 5l 10 - 2a 30 - 45 * 60 " 75 - 10 °- 15a m 

 End electrodes. - 

 x 1-73 ... 1-77 L78 1-79 1-80 1-81 ... 1-84 1-84 



Same, current reversed. 



x L44 ... 1-76 1-77 178 ... 1-81 1-84 



% 1 platinum. Slightly gilded. 

 x 1-91 2-08 2-14 2-21 2-24 2-30 2-33 2-35 2-36 



Same, current reversed. 

 x 2-01 2-13 2-15 2-17 2'35 2-46 



