38 



U. S. BUREAU OF FISHERIES. 

 Output and value of canned salmon in Alaska in 1921. ' 



1 Casescontaining ^-pound cans have been reduced one-half in number, and thus, for the purpose of afford- 

 ing fair comparison, all are put upon the basis of 48 1-pouiid cans per case. 



Output of canned salmon in Alaska, 1915 to 1921.^ 



1 The number of cases shown has been put upon the common basis of 48 one-pound cans per case. 



