86 
BULLETIN OF THE BUREAU OF FISHERIES 
in, and a summer season from June to September, when prevailing south and south- 
westerly winds both retard it and direct it offshore. 
The following velocities for the winter and spring have been obtained for the 
region between the Bay of Fundy and Nantucket Shoals. 
Figure 26.— Schematic representation of the dominant nontidal circulation of the Gulf of Maine, July to August. (After 
Bigelow, 1927) 
At Portland Lightship measurements made by the United States Coast and 
Geodetic Survey (Bigelow, 1927, p. 861) show a mean dominant set of about 8 miles 
a day to the south and west from October to December of two different years. Accord- 
ing to prevailing winds, the October-December conditions probably continue until 
May. 
