Inetead of drogues^ dry sand ballaLSt vas added to all odd -numbered 

 bottles. Those with even numbers contained no ballast. Six of each 

 were lavtnched at each release station. It was intended that the 

 ballasted bottles float vertically at or near the surface and thus be 

 less influenced by the action of winds and breaking waves. The 

 results, however, indicate no significant difference between the con- 

 jectured movement of the two types. 



LITERATURE CITED 



Day, D. Gtodfrey 



In press. Gulf of Maine circulation as deduced from drift bottles. 

 U. S. Fish and Wildlife Service, Fishery Bulletin. 

 In press. 



Walford, Lionel A. 



1938. Effect of currents on distribution and survival of the 



eggs and larvae of the haddock on Georges Bank. 



Bulletin of the U. S. Bureau of Fisheries, vol. '4^9. 



