FOREWORD 



This paper is submitted with the objective of providing other 

 fishery investigators with a resume' of what has been acconnplished 

 in attempting to guide fish by means of subaqueous sonic vibrations. 

 Preliminary studies were made under the direction of J. T. Barnaby, 

 formerly Chief, North Pacific Fishery Investigations. George A. 

 Rounsefell was responsible for all early arrangenaents with the U.S. 

 Navy. D. W. Beecher of the Naval Ordnance Laboratory, White Oaks, 

 Maryland, provided acoustical equipment and technical advice, assisted 

 by W. R. Cook. In field investigations the senior author was enthusi- 

 astically aided by Kingsley G. Weber, Ned C, Neal, and Clifford V. 

 Lalonde. Funds for the sonic studies were provided by the U.S. Corps 

 of Engineers, Portland, Oregon. 



