Inetead of drogues, dry sand bal leist was suided to all odd -numbered 

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

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

 ballasted bottles float verticetLly 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. Godfrey 



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

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

 In press. 



Walford, Lionel A. 



1938. Effect of currents on distribution and survival of the 

 eggs and larveie of the haddock on Georges Bank. 

 Bulletin of the U. S. Bureau of Fisheries, vol. h^. 



6 



