106 A. E. Verrill—Dredgings on the Coast of New England. 
7th. Everywhere over the banks, and especially over their 
southern slopes, there is a great difference between the tempera- 
ture of the bottom and surface, generally amounting to 15°-20° 
F., oreven more. The temperature of the surface was generally 
from 60° to 72°. The temperature of the air was always very 
near that of the water; but generally one or two degrees higher. 
Owing to the great difference between the temperature of the 
bottom and surface waters, it was found impossible in most 
cases to keep the animals brought up in the dredge alive, the 
warm surface waters proving fatal in a very short time. E 
8th. Inside of the banks, both in the Bay of Fundy and in 
St. George’s Gulf, near the banks, no such great contrast in the 
temperature of the bottom and surface was found, the difference 
sumption that an “arctic current,” properly so-called, as distin- 
guished from the tidal currents, enters St. George's Gulf or the 
Bay of Fundy. The action of the tidal currents, in bringing 
up the cold bottom waters of the ocean, is perhaps a cause sulll- 
cient to produce most of the coldness of the water in this region. 
We may suppose, however, that these waters constantly receive, 
in the tidal currents, accessions of cold water, which has pri 
marily come from the north in the arctic current. It should be 
added that we do not yet know the temperature which would 
Errata.—In the first of this article, pp. 5 and 14, for Astropecten, read 
Archaster. Page 9, line 30, for 65° 50.3’, read 65° 68.3”. 
(To be continued.) 
