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 part 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 poiiit claiming attention was : — 



The distribution of the gases in the lead chamber. 

 The following tables will show the results arrived at : 



SuLPHUEOTJS Acid. — Table I, 



C Length of "i 

 -< Chanilie" 

 (. in feet. 



-{ Chaml3er r 10 2 30 40 50 60 7 

 ' ■ - t. j 



No. 2. 



ft. in height, 15 



(Entrance.) 



No. 1. 



ft. in height, 3 



(Entrance.) 



72% 70to 



72% 



3%. 8% 



46%31to 



33% 



1P% 



29% 



J L 



25% 



28% 



26% 



18% 



C Length of ~1 



^0 80 90 100 110 120 130 140 ^ Chamber V 



I I I i I I I I ( in feet. ) 



30% 



19% 



22% 



20% 



29to 22% 

 30% 



17% 17% 



23% 



14% 



13% 



135 



I I I 



18%: 18% 



8% 1 16% 



15 ft. in height. 

 (Exit.) 



3ft. in height. 

 (Exit.) 



10 20 30 40 50 60 70 80 90 100 110 120 130 140 

 Length of Chamber in feet. 



No. 1 represents the percentage of acid at 3 feet from bottom of chamber. 

 No. 2 „ „ 15 



SuLPHTTEic Acid. — Table II. 



( Length of ") ( Length of ^ 



J Chamber |- 10 20 30 40 50 60 70 80 90 100 110 120 130 140 4 Chamber }■ 



( in feet. ) i i j i . i I i i T"! i I i I in feet, j 



No. 2. 



ft. in height, 15 



(Entrance.) 



No. 1. 



ft. in height, 3 



(Entrance.) 



15 ft. in height. 

 (Exit.) 



3 ft. in height. 

 (Exit.) 



10 20 30 40 50 60 70 80 90 100 110 120 130 140 

 Length of Chamber in feet. 



No. 1 represents the percentage of acid at 3 feet from bottom of chamber. 

 No. 2 „ „ 15 



