32 A. S. Packard on the Drift Phenomena of Labrador, etc. 
off into the Acadian district at the present line of floating ice, 
during the Glacial epoch extended up the St. Lawrence river, 
and as far as Portland, on the coast of Maine, where it shaded 
into a more southern assemblage.. . 
In Maine there are two distinct horizons of life. The lowest 
transversa, Crepidula fornicata, with Buceinum plicosum and Nassa 
obsoleta were found to abound in this locality, where the warming 
influence of the Gulf Stream was strongly felt, while the waters 
of Maine were cooled down by the Arctic or Polar current. 
In the beds of this horizon at Gardiner occur the teeth of the 
bison, walrus, and bones of other animals, and the Mallotus 
Burlington, Vt., in the Champlain clays, which evidently belong 
to this horizon, the Beluga Veviontans of Thompson. 
hus the two glacial faunz that have successively gained a 
foothold in northeastern temperate America, seemed, as re 
tt f 
land, is also found fossil in the Ottowa clays, according to Dr. 
to be a purely Arctic American assemblage. Accord- 
e view of Dr. Hooker,” the most ancient glacial flo 
ved from Scandinavia. On the contrary, as far as geo- 
* Outlines of the Distribution of Arctic plants, by J. D. Hi iy te 4 
Linn. Soc. London, xxiii, part ii. by piri ea 2 3 
