IV MECHANICAL AND ACOUSTICAL SENSES 



Mechanoreceptors and the Behavior of Elasmobranch Fishes 

 with Special Reference to the Acoustico-Lateralis System 



Barry L. Roberts 331 



Underwater Sound— Its Effect on the Behavior of Sharks 



Arthur A. Myrberg, Jr 391 



Telemetering Techniques for the Study of Free-Ranging Sharks 



Donald R. Nelson 419 



