BIGELOW: COAST WATER EXPLORATION OF 1913. 



193 



at about the forty-five fathom curve off Cape May, and at about the 

 eighteen fathom curve off Chesapeake Bay; and 33. 5%o water at the 

 forty, thirty, and ten fathom contours at the same locaUties. Bottom 

 water fresher than 33%o was restricted to a narrow coastal zone north 

 of Delaware Bay; and the curves for this value and for 33.5%o show 

 evidence of water from the Bay, by swinging seaward off its mouth. 

 But the outflow from Chesapeake Bay has no apparent effect on the 

 curves, although it probably does reduce the bottom below what 

 would otherwise obtain. The chart (Fig. 36) represents July condi- 

 tions only; earlier as well as later in the season, the bottom water 

 was much salter at the few localities where water-samples were taken 

 (34.18%o off Cape May, May 9; 35.17%o in 60 fathoms, southwest 

 of Nantucket August 22). 



Salinity profiles. A profile (Fig. 37) running from the southern 

 edge of the basin of the Gulf of Maine (Station 10058) across Nan- 



FiG. 37. — Salinity profile from the southern part of the basin of the Gulf of 

 Maine (Station 10058) across Nantucket Shoals to the outer edge of the 

 continental shelf south of Nantucket (Station 10061). 



