438 A. H. Verrill—Results of recent Dredging Expeditions 
estimated to weigh over 500 lbs. These boulders were probably 
Fundy, and also with the dredgings made last year, in 85 to 
150 fathoms, near St. George’s Banks. In fact, these three re- 
gions may be regarded as distant parts of one great basin, é 
ferred to in a former article as “Saint George’s Gulf,” and this 
region is throughout its whole extent bathed in cold water of 
nearly uniform temperature at corresponding depths. The 
deepest parts of this gulf seldom exceed 150 fathoms, and are 
perhaps nowhere more than 200 fathoms. Whether the nearly 
ice-cold water filling the deeper parts of this cold-area can be 
regarded as constituting a definite current, or offshoot from the 
great arctic current, flowing southward along our coast in deep 
water off shore, or whether it is a portion of the great body of 
a 
brought into this partially closed basin by the powerful tidal 
currents, is still uncertain. But it is important to have estab- 
lished the fact that this body of cold water a ich 
closely to the coast of Maine as to manifest itself most distinctly 
within 12 or 15 miles of Cape Elizabeth, both by its highly 
arctic fauna and its icy temperature, even in midsummer. 
Moreover, there can be no doubt but that the constant admix- 
ows. Our observations, both in Vinyard Sound and poser 
Bay, show that such an action does take place, and that the 
The temperature of the bottom-waters in the deeper channels among the islands, 
* 
in 15 to 25 fathoms, was usually from 42° to 50° F.; while the surface was usualy 
een 55° and 65° in July and August. 
