CONTENTS 



Page 



Introduction 1 



Field party personnel 1 



Field procedures 5 



Bathythermograph and meteorological observations 5 



Light penetration and water color 5 



Zooplankton collections 5 



Surface fish school, bird flock, and aquatic mammal sightings 5 



Long line fishing 6 



Surface trolling 6 



Tagging 6 



Laboratory procedures -^ 6 



Salinity determination 6 



Phosphate determination 6 



Zooplankton 6 



Literature cited 7 



ILLUSTRATIONS 



Figures la-g. Vessel tracks for Hugh M. Smith cruises 50 and 51 and Charles H. Gilbert 

 cruises 44, 45, and 46 



