66 
the attention of scientific visitors to the Cove. There is now no 
doubt that this immense fragment has been transported and 
placed in its present position by the agency of ice. One of the 
striated pebbles placed on exhibit is of interest, as taken by the 
writer from near the top of the “Trig.” Hill, 112 feet above sea 
level. 
Many of the erratics have no doubt been derived from the 
Archeans of the neighbourhood, but there are a great many that 
are unrepresented by any rock now known in situ for many 
miles, and proves that the ice must have been more than of local 
extent. I fear that we have too little data at present to locate 
these travelled stones with regard to their source. To do this 
effectively would involve careful petrological examinations—a 
promising field of research that is awaiting some competent 
student in this department. 
SUPERFICIAL AREA OF THE GLACIAL DEPosITs. 
Fortunately two little streams cut the glacial beds through 
their entire easternly extension, one on the north side of Black 
Point, and the other to the south of that landmark, so that the 
area of this fragment of glacial action can be mapped with ap- 
proximate exactness. By following up the beds of these streams 
it was found that the glacial deposits extended about half a mile 
from the coast line, passing not only up the main, but the lateral 
valleys, and thinning out as the higher altitudes were reached. 
In the most southernly of these two streams the limit of the beds 
was reached near the old sheds, well known as the usual camping 
place for picnicers in visiting the locality. In restoring the glacial 
area we must imagine the outline of the Cove in preglacial times 
to be that of a comb or saucer-shaped depression on the flanks of 
the Archean hills. The ice sheet, moving from south to north, 
filled this lateral depression and passed over the minor heights on 
its northern and southern limits. A depression of this kind on 
the flanks of a glacier would supply the most favorable condi- 
tions for the accumulation of a ground moraine, and its contents 
would also be subsequently protected from the erosive forces by 
the wall of hard rock with which it was nearly surrounded. The 
deposition of the Miocene beds over the same area in later times 
would still further help in preserving this remarkable outlier, the 
Tertiary beds acting asa protective cover that has remained to 
the present day. 
THE AGE OF GLACIATION 
is a most interesting, although difficult, question to solve. The 
beds in question rest upon rocks of Archzean age, the most ancient 
of the sedimentary series, and are capped by Miocenes, one of 
the newest of the geological formations. They may, therefore, be 
