308 NOTES ON THE GEOLOGY OF POINT PLEASANT—CAMERON. 
Rock” are marks, supposed to have been made by. Annelids, ave 
seem. ‘The tracks are called Helminthites. 
GLACIAL DRIFT. 
The most interesting subject connected with the geology of 
this district is the glacial drift. There is a beautiful example 
of striation in rear of Prince of Wales’ Tower. The lines are 
distinctly marked and remarkably uniform in direction. The 
average course of a number measured is S. 20° E. A very few 
have a different course, S. 35° E. 
COURSE OF STRIATION. 
That the direction was from north to south may be inferred in 
the following way: 
We notice several deep grooves which abruptly break into 
small ones. These keep the same course as the larger ones. Now 
it is much more likely that the “graver” was broken and formed 
a uniform large one. Hence we infer that the course was from 
the larger towards the smaller grooves. 
Following the course of striation we reach the shore near the 
N. W. A. Battery, and proceed to examine the bank below the 
old fort. One of the most interesting objects to be seen here is 
a large quartzite boulder, a scarred veteran, of the glacial drift, 
bearing the marks of the difficulties it has gone through, on its 
face. That it has been moved over another stone surface can 
easily be seen. We see on it a sharp edge that has been produced 
by being rubbed first one side and then the other on another 
surface. The lines of abrasion are quite distinct. The boulder 
weighs over half a ton. 
DRIFT ROCKS. 
The drift rocks collected here include Gneises, Granites, Sijen- 
ites, Diorites, Quartzites, Porphyries, Schists and Amygdaloids. 
The region they have come from is the shores of the Bay of 
Fundy. The magnetic course of striation, as we have have seen, 
is 8. 20° E., which added to 20° var. gives a direction of 40° 
from the true meridian, This just grazes Blomidon. They have 
come from here or from some point on the shore of Cobequid Bay 
and in the Cobequids as far east as Economy Point, the 
