All salinities in the area showed a considerable reduction sine© 

 February llo At most stations the drop was drastic shortly after the 

 start of the survey* The source of fresh water responsible for the 

 lowered salinities during the first drop was undoubtedly the Pearl 

 River outflow since the salinity in Lake Pontchartrain was not materially 

 re/dueed at this timeo The influence of the drainage from Lake Pontchartrain 

 into Mississippi Sound, however, may be partly concerned with the salinity 



reduction after February 28 o 

 following tables o 



The salinity changes are shown in the 



Date 



Table 2o Transect I, Bottom salinities o/oo, Mississippi Soxind 



E F 1/ 



Stations 



6ol 



4e4 



1<,5 

 lo7 

 Oo9 

 Oo9 



lol 



Oo8 



la 



Oo7 



9o4 



1,7 

 2o9 

 lo9 

 lo8 

 1,4 

 2oO 

 lo4 



lol 



9oO 



9.6 

 9oO 

 2oO 

 3,6 

 2,4 

 3o4 

 2o9 

 3»2 

 3ol 

 Oo3 



\f» The stations are arranged from north to southc 



6 



