United States Department of the Interior, Stewart L. Udall, Secretary 

 Fish and Wildlife Service, Clarence F. Pautzke, Commissioner 

 Bureau of Sport Fisheries and Wildlife, Daniel H. Janzen, Director 



EFFECTS OF DDT SPRAY ON FISH AND AQUATIC INSECTS IN 

 GALLATIN RIVER DRAINAGE IN MONTANA 



By 



W. R. Bridges and Austin K. Andrews 

 Special Scientific Report- -Fisheries No. 391 



EFFECTS OF DDT SPRAY ON STREAM BOTTOM ORGANISMS 

 IN TWO MOUNTAIN STREAMS IN GEORGIA 



By 



Paul J. Frey 

 Special Scientific Report- -Fisheries No. 392 



Washington, D. C. 

 August, 1961 



