CONTENTS 



Statistics of the fishery, 1890-1951 247 



Catch and effort data, 1938 and 1942-51 248 



Determining fishing effort for 1935-37 and 1939^1 249 



Fishing effort and catch, 1935-51 251 



Estimating the size of the base-year shad run 251 



Determining sizes of runs and escapements, 1935-50 253 



Factors affecting the size of Connecticut River shad runs, 1940-51 255 



Fishing 255 



Environmental changes 256 



Extraneous mortality 256 



Conclusions and recommendations 258 



Literature cited 259 



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