328 * — Canadian” Record of Science. 
account for them. These local glaciers drew their supplies 
from large gathering grounds on the water-shed along the 
Notre Dame or Green Mountain Range. Generally speak- 
ing, they were shed on either side of the Appalachians, 
nearly at right angles to their axis, which accounts for the 
parallelism or correspondence in direction of the striz 
referred to by Dr. Ells." The river valleys and minor 
ridges and hills on the slopes, however, caused many local 
deviations from the normal course. On the south-east slope, 
their movements were, perhaps, subjected to greater local 
deflections than in the north-west, caused by the rugged 
topographic features which are upon it. For example, the 
chief water-shed of New Brunswick, already referred to as 
lying between the St. John valley and the Baie des Chaleurs 
and Gulf of St. Lawrence, shed the ice of the southern slope 
of the Notre Dame mountains once more in nearly opposite 
directions, or north-eastward and south-eastward.? On these 
minor slopes, local surface inequalities again swerved the ice- 
masses, in a greater or less degree, from the courses given 
to them by the New Brunswick water-shed, etc. For the 
most part, they followed the nearest slopes or river valleys, 
thus showing their essentially local character. During the 
period of melting or retirement of the glaciers, this became 
more and more apparent. 
THe LAURENTIAN OR ARCHHAN AREA. 
The glacial phenomena of the Archean Area north of 
the St. Lawrence and great lakes, have also undergone in- 
vestigation by the Geological Survey staff, and a large num- 
ber of facts collected relating thereto, in addition to those 
recorded in Geology of Canada, 1863, and in Sir William 
Dawson’s Notes on the Post-Pliocene, etc. Along the St. 
Lawrence valley, the general parallelism of the Laurentide 
slope to that of the Notre Dame Range opposite caused the 
strise to have nearly a similar south-east and north-west 
1[pid, part J. 
2Annual Report, 1885, Vol. I, part GG. 
