FISHERY BULLETIN; VOL. 77, NO 1 



concentration of such fishes by the acoustic 

 technique. 



ACKNOWLEDGMENTS 



We wish to thank the many people who helped 

 with this study. Larry Marx completed and 

 checked most of the measurements, made the 

 graphs, and edited the manuscript. John Chap- 

 man calibrated and ran the electronics and acous- 

 tic systems. Heidrun Mumper drafted the illustra- 

 tions and Sally Womack typed the manuscript. 

 Cheryl Chapman introduced us to the use of the 

 computer for editing and final typing of the man- 

 uscript. We also appreciate the helpful discussions 

 with M. Neighbors, C. Rainwater, and B. Nafpak- 

 titis of the University of Southern California and 

 D. V. Holliday of Tracor, Inc., San Diego. Special 

 thanks must go to the officers and crew of the 

 Velero TV and to Comdr. R. Tipper of the Office of 

 Naval Research for their support. This work was 

 supported by the Office of Naval Research contract 

 N00014-75-C-0683. 



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