1905 - 6 .] Electrolysis through Precipitation Films. 
453 
the third column gives the final conductivity in mhos ; and the 
fourth column is the percentage ratio of the final to the initial 
conductivity. 
Aluminium Hydroxide Films. 
1. Ammonium chloride. 
1 mol. NH 4 C1 + \ mol. NH 3 ; i mol. NH 4 C1 + -fc mol. A1C1 3 . 
I. 
II. 
III. 
IY. 
A 
•001426 
•001357 
95*2 
B 
1231 
1192 
96-8 
C 
1252 
1198 
95*8 
X 
1473 
1401 
95*3 
Y 
1122 
1078 
96-1 
Z 
1084 
1018 
939 
Mean 
95-5 
2. Ammonium bromide. 
mol. NH 4 Br 3 
+ Jinol. XH 3 ; 
Jmol.XH 4 Br + 2V 
mol. AlBr, 
I. 
II. 
III. 
IY. 
A 
•001423 
•001331 
93*5 
1455 
1338 
92*0 
1437 
1319 
91-7 
B 
1449 
1348 
93-0 
1426 
1327 
93-1 
1466 
1324 
90*3 
1409 
1331 
94-5* 
X 
1176 
1097 
93*3 
Y 
1159 
1104 
95 3* 
Z 
1192 
1144 
96 0* 
Mean 
92*5 
