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August 9-10, where returns from stations north of a parti- 

 cular line were separated by an evident gap from those below 

 the line. The cruise of August 19-20, 1955, with its strong 

 northward component and low velocities suggest a return to 

 conditions noted in the fall of 1955. 



The location of this divergence varied somewhat in 

 position from north to south. Its distance from shore is 

 difficult to estimate, but it usually extended at least to 

 within three miles of shore. Whenever an inshore drift was 

 well developed and a general southerly or northerly component 

 was of no great importance, the divergence appeared to occupy 

 a place generally near the center of the bay. 



If the spread of cards from individual stations be 

 examined in detail, there is evidence of a littoral drift 

 close to the shore. Occasionally this spread was greater 

 than could be accounted for by either random dispersal or 

 by the divergence described above, and cards appeared well 

 to the south or to the north of the main group, the time of 

 travel being not much greater. Such cards may well have 

 been carried by a littoral drift in some cases opposite in 

 direction to that of the main current pattern. 



The general inshore drift of surface currents in the 

 spring and summer of 1956 has important implications as far 

 as the transport of sewage is concerned. Certainly such a 

 drift is less favorable than a situation in which the currents 

 are directed offshore, because it means that material dis- 

 charged from the proposed outfalls would have been carried 

 shoreward. However, the direction of flow is not, in itself. 



