TAKEWO HEMMI 
Table V. Results of experiment with corrosive sublimate. 
Time of soakage 
(in minutes) 
0.0 1 % 
0.025 % 
0.05 % 
0.1 % 
o 
+ 
+ 
+ 
+ 
I 
5 
IO 
3o 
Table VI. Results of experiment with copper sulphate. 
Time of soakage 
(in minutes) 
°-5 % 
2.0% 
3-°% 
4.0 % 
0 
+ 
+ 
+ 
+ 
+ 
1 
+ 
+ 
+ — 
+ — 
+ — 
5 
+ 
+ 
+ — 
+ — 
+ — 
10 
+ 
+ — 
+ — 
30 
■ — 
+ — 
+ — 
60 
+ — 
+ — 
Table VII. Results of experiment with caustic soda. 
Time of soakage 
(in minute*) 
1.0 
■2.0% 
5-0 % 
10.0 % 
20.0 % 
0 
+ 
+ 
+ 
+ 
+ 
I 
+ 
+ 
+ — 
5 
+ — 
+ 
10 
+ — 
+ — 
3° 
Table VIII. Results of experiment with ^carbonate of soda". 
1 Time of soakage 
(in minutes) 
lO.O % 
20.0 % 
30.0 % 
40.0 % 
0 
+ 
+ 
+ 
+ 
+ 
1 1 
+ 
+ 
+ 
+ 
+ 
5 
+ 
+ — 
+ 
+ 
+ — 
+ 
+ — 
+ 
+ — 
30 
+ — 
+ — 
+ — 
+ — 
