65 



temperature of 31° F., and a salinity of 33.03 %o, while on the other 

 side a few hundred yards north of the rip, a similar dip gave a tem- 

 perature of •15.5° and a salinity of 33.79 Voo? '^ warming of 14.5° and 

 a salting of 0.74 Vop. This warm salty water was pushing inshore 

 to the westward, undoubtedly connected in its movement with the 

 offshore Atlantic water as shown b}^ the isotherm on chart F. Such 

 a movement of the water masses on the eastern side of the Grand 



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Bank, combined with the body of relatively warm water on the 

 Bank itself, which tended to resist displacement, reacted to pinch 

 off the separating strip of icy northern water. 



Attention is invited to the curled appearance of the isotherms, 

 chart F, in the vicinity of 42° 00' north, 49° 00' west, which indi- 

 cates a large vortex in process at that place and time, and is simply 

 another illustration of the tendency of oceanic circulation to pro- 

 ceed in eddy-like formations which may be pictured as typical oc- 



