PHYSICAL OCEAN OGEAPHY OF THE GULF OF MAINE 
881 
this group of bottles went out around Nantucket. 68 Bottle No. 536 journeyed to 
the south shore of Marthas Vineyard (85 miles) at a rate of at least 4 miles per day. 
Fig. 174. — Assumed drifts of representative bottles recovered from line B, set out off Cape Cod, July 6 to 8, 1922. ©.place 
of release. 
The mid-section of line B (lat. 40° 50' to lat. 41° 30') was clearly involved in this 
same set, veering clockwise around Nantucket Shoals, because 50 of these bottles out 
of a total of 103 were picked up along the shores of southern New England, from 
69 The assumed routes for this group of bottles are laid down on the chart without reference to Nantucket Shoals. Actually , 
however, the complex tidal currents among these banks and through the channels between them must give a very circuitous 
route to any flotsam in that region. 
