UNITED STATES DEPARTMENT OF THE INTERIOR 



Stewart L. Udall, Secretary 



John A. Carver, Jr., Under Secretary 



Stanley A. Cain, Assistant Secretary for Fish and Wildlife and Parks 



FISH AND WILDLIFE SERVICE, Clarence F. Pautzke, Commissioner 



Bureau of Commercial Fisheries, Donald L. McKernan, Director 



Inventory of U.S. Exploratory Long line 

 Fishing Effort and Catch Rates for Tunas 



and S>vordfish in the Northwestern 

 Atlantic, 1957-65 



By 



PETER C. WILSON and MARTIN R. BARTLETT 



Contribution No. 1698, Woods Hole Oceanographic Institution 

 Woods Hole, Mass. 



United States Fish and Wildlife Service 

 Special Scientific Report.-Fisheries No. 543 



Washington, D.C. 

 February 1967 



