BIGELOW: COAST WATER EXPLORATION OF 1913. 



217 



tongue (p. 165). But this condition must have been limited to a 

 narrow east and west zone, for in the profile off New York (Fig. 58) 

 the dip of the curves in the same relative position, is just the reverse, 

 being steepest at the level (fifty fathom contour) where the slope of the 

 bottom becomes rapid, i. c, just below the cold tongue. At about 

 thirty fathoms the density curves are generally horizontal, and they 

 are probably horizontal below 100 fathoms. The next, off Barnegat 



fa.O 

 10 

 20 

 30 

 40 

 50 

 60 

 70 

 80 

 90 

 100 

 110 



63 



62 



61 



Fig. 57. — Density profile across the continental shelf southwest i 

 Nantucket (Stations 10063, 10062, 10061) July 10-11. 



(Fig. 59), shows a similar distribution of density, except that the sur- 

 face, as well as the deeper water was densest at the seaward end, 

 the dip of the curves being especially pronounced in the upper fifteen 

 fathoms or so, and again at 40-50 fathoms over the continental slope. 

 A profile running from Station 10079 to Station 10074 (Fig. 60). 

 shows that just south of Delaware Bay where the surface water was 

 lightest next the coast, the reverse was true below about twelve 

 fathoms, the bottom water being heaviest, depth for depth, next the 

 land, while the seaward dip of the curve of 1.026, suggests a seaward 



