22 



Nitric Acid. — Table III. 



( Length of ") ( Length uf ^ 



-I Chamber "- 10 20 30 40 50 60 70 80 90 100 110 120 130 140 -' Chamber V 



i in feet. ) "~^ 1 , i , . i i i I i \ T"! i ; i t in feet. ) 



No. 2. 



ft. in height, 15 

 (Entrance.! 



Xo. 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 



