92 MARION AND GENERAL GREENE EXPEDITIONS 



70 70 60 50 40 30 



60 50 



Figure 55. — Salinity at 100 meters July 19-S(ptpmber 11, 1928. 



This area was also relatively fresh, indicating quite plainly that an 

 offshore expansion of the surface layers occurs here at times during 

 summer. In this connection it should be noted that the observations 

 south and east of the Strait of Belle Isle were made approximately 

 weeks subsequent to those immediately north of that region, and 

 consequently due allowance must be made for that fact. Two other 



