Sulphuric Acid-manufacture. 



31 



Diagram la. 





10 



20 



30 



40 



50 



Feet in length. 

 60 70 80 90 



100 



no 



120 



130 



140 



73 







■ 



!■! 



■ 







IIH 



H 



H 































SH 













■ 

























71 



69 

 67 

 65 







g 



■■ 









HII 





■ 































■HI 



■ 







BBBB 



: 



■ 































■■ 









BBBB 





■ 

































■ 









■sbi 





























63 



6! 

 59 

 57 









H 



M 



■ 







|||| 



































■ 



III 



■ 







BBBB 



































■ 



1 



1 







III 





























55 



53 



^ 51 



|49 



J 47 

 «j 45 

 S 43 



1 41 

 § 39 

 p- 37 



"2 35 











in 



n 



■ 

 ■ 







III! 





































in 









BHBB 





































El 



■ 







BBBB 





































P 



■ 







1 













































m 





























00 33 











■■ 









BBBB 





























° 31 



















BBBB 





























% 29 



















BBBB 





























c 27 



















BBBB 





























g 25 

 ^ 23 



















jjjB 





























21 



















BBBB 





























19 

 17 

 15 

 13 

 11 

 9 



















g||| 













































BBBB 













































1BI 









: 





































BBBB 











1 



















7 



















BlI 











■ 



















5 



















BHBB 









■ 



I 



















3 



















BHBB 









B 



B 



















10 20 30 40 50 60 70 80 90 100 



Feet in length. 



10 120 130 140 



In this diagram the dotted line represents the amount of acid 

 at 3 feet from bottom of chamber. 



The white line represents the amount of acid at 15 feet from 

 bottom of chamber. 



