316 



U. S. BUREAU OF FISHERIES 



Persons engaged, investment, and products in the mussel fisheries of rivers tributary 

 to Lake Michigan in 1922, by apparatus, States, and counties — Continued 



Note. — The mussel fisheries on the above rivers have not previously been shown with Great Lakes 

 statistics, but those of some of them were shown in an independent mussel canvass for the year 1913. 



