SEASONAL VARIATIONS in 

 TOXICITY of BUTTER CLAMS 

 from SELECTED ALASKA 

 BEACHES 



I Marine Biological L-;- •■ ,:i 



LIBRARY 



OCT 2 31950 



WOODS HOLE, MASS. 



SPECIAL SCIENTIFIC REPORT: FISHERIES No. 53 



UNITED STATES DEPARTMENT OF THE INTERIOR 

 FISH AND WILDLIFE SERVICE 



