160 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
61° to about 67.5° at Nantucket light-ship; and the curves for 70° 
and 72° reveal a tongue of warm water extending from the outer 
edge of the shelf south of Long Island northeastward toward Nan- 
tucket. Probably it was Gulf Stream water driven northward over 
ze 49 50°51 52 53 54 55 56 57 58 59 60° G1 62 63 64 65 66 67 68 69 70° 71 72 73 74 75 76 77 78.79 go 
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Fic. 6.— Temperature sections on the continental shelf south of Delaware 
Bay (Stations 10074, 10075, 10077), at the mouth of Chesapeake Bay 
(Station 10078) and at the edge of the Gulf Stream opposite Chesapeake 
Bay (Station 10076). 
the shelf by the southerly gale of August 23; but no salinities were 
taken. For a list of the surface temperatures taken by Mr. Welsh, 
see p. 350. 
fi emperature sections (Table, p. 344). In general there was a rapid 
fall in temperature from the surface downward, all over the conti- | 
nental shelf, from Cape Cod to Chesapeake Bay; and the sections 
