CONTENTS 



FOREWORD 



Rear Admiral R. K. Geiger v 



PREFACE 



Edward S. Hodgson and Robert F. Mathewson vi 



I PERSPECTIVE 



Sharks in Perspective 



Perry W. Gilbert 1 



II VISION 



Visual System of the Elasmobranchs: State of the Art 

 1960-1975 



Samuel H. Gruber and Joel L. Cohen 11 



Refraction and Accommodations of the Elasmobranch Eye 



J. G. Sivak 107 



Brain Organization in the Cartilaginous Fishes 



R. Glenn Northcutt 117 



Behavioral Studies Correlated with Central Nervous System 

 Integration of Vision in Sharks 



R. Curtis Graeber 195 



III CHEMICAL SENSES 



Electrophysiological Studies of Chemoreception in Elasmo- 

 branchs 



Edward S. Hodgson and Robert F. Mathewson 227 



Chemoreception and the Role of Its Interaction with Flow and 

 Light Perception in the Locomotion and Orientation of Some 

 Elasmobranchs 



Herman Kleerekoper 269 



viii 



