21 
working of a chamber sulphuric acid should be 
run upon the bottom in preference to water, as at 
present generally done. 
4. That the upper paid of the chamber is of use princi- 
pally as a ‘ reservoir,’ and that little or no action 
takes place between the gases at that part. 
The next point claiming attention was : — 
The distribution of the gases in the lead chamber. 
The following tables will show the results arrived at : 
Sulphurous Acid. — Table I. 
(■Length of 
-< Chamber 
(. in feet. ) 
No. 2. 
ft. in height, 15 
(Entrance.) 
No. 1. 
ft. in height, 3 
(Entrance.) 
10 
20 
30 
40 
50 
60 
70 
80 
90 100 
110 
120 
130 
140 
to 
1 
70to 
72% 
1 
46% 
1 
31to 
33% 
i 
25% 
1 
26% 
1 
30% 
1 
22% 
1 i ‘ 
29to 22% 
30/ 
1 
23% 
1 
13% 
00 — 
18% 
3 % 
1 
8% 
1 
16% 
| 
29% 
! 
28% 
1 
18% 
1 
19% 
1 
o — 
CS| 
17%' 17% 
1 ! 1 
^ 
13% 
1 
8% 
1 
16% 
1 
10 
20 
30 
40 
50 
60 
70 
80 
90 100 
no 
120 
130 
140 
f Length of 
s Chamber V 
C in feet. ) 
15 ft. in height. 
(Exit.) 
3ft. in height. 
(Exit.) 
Length of Chamber in feet. 
No. 1 represents the percentage of acid at 3 feet from bottom of chamber. 
No. 2 ,, ,, 15 ,, ,, 
Sulphuric Acid. — Table II. 
f Length of ^ 
•< Chamber >- 
(. in feet, j 
15 ft. in height. 
(Exit.) 
3 ft. in height. 
(Exit.) 
Length of Chamber in feet. 
No. 1 represents the percentage of acid at 3 feet from bottom of chamber 
No. 2 „ „ 15 
35 
59 
