Response of Migrating Adult Salmonids 

 to Vertical and Horizontal Rectangular 

 Orifices at Two Depths 



by Clark S. Thompson, William Spencer Davis, and Emil Slaticic 



L ( BP^AR Y 

 JUL 1 10f^7 



I WOODS HOL E. MASS 



SPECIAL SCIENTIFIC REPORT-FISHERIES Na 547 



UNITED STATES DEPARTMENT OF THE INTERIOR 



FISH AND WILDLIFE SERVICE 

 BUR E AirOF^COMMERciAr^lSHERiir 



