SURVEY OF THE COLUMBIA RIVER 

 AND ITS TRIBUTARIES - Part iV 



Marine Biological Laborc-tory 



X. I B K. .A. PI -y 



OCT 2em(' 



WOODS HOLE, MASS. 



SPECIAL SCIENTIFIC REPORT: FISHERIES No. 37 



UNITED STATES DEPARTMENT OF THE INTERIOR 

 FISH AND WILDLIFE SERVICE 



