PHYSICAL OCEANOGEAPHY OF THE GULF OF MAIISTE 



951 



45' 



30' 



15' 



42° 



45 



30' 



Fig. 199.— The single-barbed arrows show the direction of the gradient current, as calculated for Massachusetts Bay by R. 

 Parmeijter, June 16 and 17, 1925. The double-barbed arrows outline the nontidal circulation as it probably existed at 

 the time. The broken curves give the density at the surface. For further explanation see p. 952. 



