PROGRESS IN BIOLOGICAL INQUIRIES, 1937^ 



By Elmer Higgins, Chief, Division of Scientific Inquiry 

 [With the collaboration of investigators] 



CONTENTS 



Page 



Introduction 1 



Cooperation 5 



Publications ^._ 6 



North Atlantic fishery investigations 8 



Haddock 9 



Mackerel 14 



Middle and South Atlantic fishery investigations 16 



Shore fishes IS 



Anadromous fishes 20 



Shrimp investigations 23 



North Pacific and Alaska fishery investigations 25 



Columbia River salmon fisheries 26 



Puget Sound salmon fisheries 28 



Karluk River red salmon 31 



Pink salmon 33 



Alaska salmon statistics 35 



Herring 35 



Pacific pilchard investigations 37 



Creat Lakes fishery investigations 38 



Fishery statistics 39 



Age and growth studies 40 



Food of Lake Michigan lake trout and lawyers 40 



Special surveys 41 



Shellfish investigations: 42 



Physiology of the oyster 43 



Oyster cultural studies 44 



Special surveys 50 



Aquicultural investigations 52 



Trout 53 



Bass 60 



Fish diseases 63 



Investigations in interior waters 64 



Pollution studies 64 



Mussel propagation 66 



Ichthyological investigations 66 



Independent activities of the fisheries biological laboratories 67 



Woods Hole, Mass ._ 67 



Beaufort, N. C 67 



Appropriations 70 



INTRODUCTION 



To an ever-increasing degi'ee, efforts in the field of fishery science 

 are bringing the resources of the waters under a measure of human 

 control. Particularly is this true of the important shellfish supplies 



' Administrative Report No. 30, Appendix I to Report of the U. S. Commissioner of Fisheries for 1938 

 Approved for publication June 4, 193S. 



1 



