22 Cincinnati Society of Natural History. 
celatura, Cancellaria impressa, C. tortiplica, Tornatellea lata,Corbula 
jilosa, Egeria donacea, Cytheriopsis hydana, Oyclas claibornensis, 
Mysia deltoidea, Conus alveatus, C. subsauridens, Cochlespira bella, 
Buccitriton altum, Limatia marylandica, Cirsostrema clatbornensis, 
Cancellaria ellapsa, Dentalium densatum ; from Shark river, Mon- 
mouth county, New Jersey, Pleurotomaria perlata, Surcula annosa, 
Acteonema prisca, and Avicula annosa. 
In 1866, Prof. J. W. Dawson* said the snow-clad hills of Green- 
land send down to the sea great glaciers, which in the bays and fiords 
of that inhospitable region, form, at their extremities, huge cliffs of ever- 
lasting ice, and annually ‘‘calve,”’ as the seamen say, or give off a 
great progeny of ice islands, which slowly drifted to the southward 
by the Arctic current, pass along the American coast, diffusing a cold 
and bleak atmosphere, until they melt in the warm waters of the Gulf 
stream. Many of these bergs enter the straits of Belle-Isle, for the. 
Arctic current clings closely to the coast, and a part of it seems to be 
deflected into the Gulf of St. Lawrence through this passage, carrying 
with it many large bergs. Mr. Vaughan, late superintendent of the 
light house at Belle-Isle, has kept a register of icebergs for several 
years. He states that for ten which enter the straits, fifty drift to the 
southward, and that most of those which enter pass inward on the 
north side of the island, drift toward the western end of the straits and 
then pass out on the south of the island, so that the straits seem to be 
merely a sort of eddy in the course of the bergs. The number in the 
straits varies much in different seasons of the year. The greatest 
number are seen in spring, especially in May and June; and toward 
autumn and in the winter very few remain. Those which remain until 
autumn are reduced to mere skeletons; but if they survive until winter, 
they again grow in dimensions, owing tu the accumulations upon them 
of snow and new ice. Those that we saw early in July were large and 
massive in their proportions. ‘The few that remained when we returned 
in September, were smaller in sizé, and cut into fantastic and toppling 
pinnacles. Vaughan records that on the 30th of May, 1858, he counted 
in the straits of Belle-Isle 496 bergs, the least of them 60 feet in height, 
some of them half a mile long and 200 feet high. Only % of the vol- 
ume of floating ice appears above water, and many of these great bergs 
may thus touch the ground in a depth of 30 fathoms or more, so that 
if we imagine 400 of them moving up and down under the influence of 
* Can. Nat. & Geol., 2d series, vol. ili- 
