DALY: GEOLOGY OF THE NORTHEAST COAST OF LABRADOR. 24d 
for the direction of ice-motion in a region once glaciated, and still 
strongly frost-bitten in the winter-season at least ; and, lastly, that both 
kinds of marking may be regarded as directly or indirectly the product 
of shearing stress set up in bed-rock at the gouging corner of a boulder 
held in the advancing ice. 
Tue GuactaAL Deposits. 
Nothing is more striking in the glacial geology of the southern part 
of the coastal belt than the almost complete absence of drift deposits. 
Above the highest shore-line registering the limit of postglacial sub- 
mergence, isolated boulders resting on bare rock, or small patches of till 
a few inches or feet in thickness, represent the only glacial accumulations 
seen at any of our landing-places save one of all those south of Nachvak 
Bay. North of Cape Porcupine and elsewhere, it is true, washed drift that 
has been assorted and collected in the form of bay-plains and beaches 
now elevated, were found ; but extensive deposits either directly ice-laid 
or distributed by glacial streams, normally failed. The exception 
referred to, applies to a small but well-defined frontal moraine situated 
on the mainland opposite Copper Island near Seal Island Harbor. 
Approaching the mainland through a narrow tickle, we were struck by the 
sight of a flat-topped terrace, steeply scarped at the shore. This cliff, 
averaging some fifty feet in height, was found. to be composed of typical 
till strongly charged with boulders of gnarled schists and gneisses, a 
peculiar hornblende syenite, micaceous trap, pegmatite, aplite and vein 
quartz. The beach facing the moraine had greater variety of composi- 
tion than any other noted during the summer. Most of the boulders 
were clearly erratic. The moraine is bilobate in plan, the curved ridge 
trending roughly north and south. It is a curving wall one hundred 
feet in maximum height and about a mile and a half in length. The 
concave side of the curve looks toward the mouth of a strong east-west 
valley opening toward the sea through a range of hills. The latter 
approach one thousand feet in altitude and seem to have harbored at 
least this one valley glacier in the closing stage of the ice period. On 
account of the rarity of such deposits, and on account of its fine develop- 
ment, it would have been of interest to study it in greater detail, but no 
opportunity to do so was afforded. 
THE GLACIATION OF THE TORNGATS. 
In 1860, Lieber noted that on the mainland opposite Aulatsivik 
Island, ‘wild volcanic-looking mountains form a water-shed in the 
