CONTENTS 



Page 



Introduction 537 



History and literature 537 



Description of the waters 537 



Biology of the stickleback 540 



Morphological variation 541 



Numbers . 543 



H abit at 544 



Age, size, and growth 544 



Reproduction 550 



Physiology and behavior 554 



Food habits 555 



Role as prey 556 



Relation to red salmon 557 



Summary 557 



Literature cited 558 



in 



