66 A FORAMINIFEROUS DEPOSIT FROM THE 
Spheeroidina dehiscens ...... sateorere Names 
Pulvinulina menardii.............. Frequent. 
Pamichelsmanaye. acts. icp sche Oe Frequent. 
Pi CLEC MS Rect atete a ieiel stsl tie! <s!bo ots ote NOt ances 
Gaudryina pupoides ..............Not rare. 
Verneuilina propinqua ............Rather rare. 
Truncatulimaslobatulla si). dc. o)s ste, A few. 
Uvigerinajasperula,. 2.26 om... on. are: 
Haplophragmium canariense ...... Rather rare. 
Hi. globigerinitorme $..... 2.0. ... .mabhen mane 
Nodosamaimucronata..........-... hare. 
Biloculima depressa. ........<« os ou LVAre, 
Some other species and genera appear to be present, as well 
as occasional diatoms and sponge spicules. The stones appeared 
to be generally colored with a blackish hue which suggested 
manganese ; but the only reaction observable was that of iron. 
The presence of the stones, some of them quite large, some of 
them water-worn, and one at least polished on one side, inter- 
mingled with the ooze, seems to suggest that they must have 
been dropped into the deposit in recent time. The only manner 
in which this could occur is by their dropping from masses 
of floating ice in the process of dissolution. Have we here 
debris imprisoned in the glaciers of Iceland, Greenland, or 
Labrador, swept around the coast into the margin of the Gulf 
Stream which helps to whirl a great North Atlantic eddy, and 
at the same time rapidly dissolves the floating ice from distant 
coasts, and strews the oozy bottom of the ocean with rock and 
gravel and clays from many lands ? 
Both the changing temperature and changing current noted 
by Captain Trott would seems to suggest that the steamer was 
at the time near the contact of the Gulf Stream with this North- 
West Atlantic eddy. If there is such an eddy, we can easily see 
that it is building up a vast area of soil on the ocean bottom, 
which is being transported from the glaciated highlands and 
coasts of the Arctic regions already referred to. The process 
