Figure 2.— Sur- 

 face circulation 

 deduced from re- 

 coveries of drift 

 bottles released in 

 January 1963 and 

 February 1962 and 

 1963 in the north- 

 western Gulf of 

 Mexico. (Arrows 

 indicate direction 

 of flow; numbers 

 indicate average 

 km/day). 



