BIGELOW: COAST WATER EXPLORATION OF 1913. 



191 



fresher once more below 100 fathoms or so. Station 10064 is the fresh- 

 est of the three, with 10071 the saltest, 10076 is intermediate between 

 these two. And they approach one another so closely below 150 

 fathoms as to suggest that they would have been all alike below that 

 depth, had the stations been located a few miles further off shore. 



33 .1 .2 .3 A .5 .6 .7 



.9 34 ,1 .2 .3 .4 .5 .6 .7 .8 .9 35 .1 .2 .3 .4 .5 .6 .7 



Fig. 35. — Salinity sections at the ledge of the Gulf Stream at Lat. 39° 55' 

 (Station 10064); Lat. 38° 56' (Station 10071) and abreast of Chesapeake 

 Bay (Station 10076). 



Of the three, Station 10071 most nearly approaches a typical oceanic 

 section; but even here the effect of coast water is evidenced by the 

 fact that the surface salinity is lower than that of the intermediate 

 layers, while Stations 10064 and 10076 both gi^•e a similar result though 

 to a greater degree. 



Salinity on the bottom. The salinity on the bottom of the shelf 



