CONTENTS-( Continued ) 



IV MECHANICAL AND ACOUSTICAL SENSES 



Mechanoreception 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 



V ELECTRICAL SENSES 



Physiology of the Ampulla of Lorenzini, the Electroreceptor of 

 Elasmobranchs 



M. V. L. Bennett and W. T. Clusin 483 



Electric and Magnetic Sensory World of Sharks, Skates, and Rays 



Ad. J. Kalmijn 507 



VI ECOLOGY AND BEHAVIOR 



Dispersion of the Port Jackson Shark in Australian Waters 



A. K. O'Gower and A. R. Nash 529 



Problems in Studies of Sharks in the Southwest Indian Ocean 



A. John Bass 545 



Knowledge and Exploitation of the Sensory Biology of Sharks in 

 the Southwestern Pacific 



Edward S. Hodgson 595 



The Effects of Fasting Confinement on Squalus acanthias 



Frederic H. Martini 609 



VII RETROSPECT 



The Office of Naval Research and Shark Research in Retrospect 



Bernard J. Zahuranec 647 



INDEX 



657 



IX 



