358 



U.S. BUREAU OF FISHERIES 



Lake fisheries of the United States, 1931 — Continued 

 OPERATING UNITS OF LAKE SUPERIOR: By gear 



OPERATING UNITS OF LAKE OF THE WOODS, RAINY LAKE, AND NAMAKAN LAKE: 



By geae 



OPERATING UNITS: s By States and counties 



' Exclusive of operating units used in the mussel fisheries of streams tributary to the Great Lakes. 



