GLACIAL GEOLOGY OF CAPE BRETON—HONEYMAN. 343: 
fore us were certainly not at all reassuring. After a diligent 
search we found a number of glacier grooves beautifully parallel, 
having a course 8.10 E. We failed in finding others. We were, 
however, satisfied. The grooves were on a comparatively smooth 
stratum close to the drift bank. We now examined the conglo- 
merate itself and found it very largely composed of Archean 
boulders. Here was a northern transportation effected by the 
seas of the Lower Carboniferous period, and a secondary source 
of Post-Pliocene transportation. Following the course of the 
grooves in a southerly direction we crossed the conglomerates, 
which we saw exposed in bold cliffs on the shore, as we proceed- 
ed and landed in the Mabou Harbour. Then, walking along the 
foot of the exposed covering of drift and conglomerates on the 
right side of the Harbour, we observed Archzean boulders in the 
drift and on the shore until we approached the Gypsums, where 
the apparently anomalous occurrence of boulders was observed. 
We have therefore a duplex transportation on the south of Mac- 
donald’s Archzean mountain. This is certainly a very striking 
phenomenon. 
The oceurrence of the grooves on the verge of the sea, like 
corresponding phenomena observed in Nova Scotia (vide Trans- 
actions of the Nova Scotian Institute of Natural Science), 
unmistakably show that an impulse was communicated from 
beyond Nova Scotia and Cape Breton, and that the glaciers of 
both are only members of a great glacier system which compre- 
hended both Nova Scotia and Cape Breton. 
Fletcher’s excellent map shows that the glacier courses of Lake 
Ainslie and Mabou Harbour, and a third appearing north of Lake 
Ainslie, along Margaree and Middle Rivers, and through an inter- 
vening break in the Archeean Mountains, are parallel to the Strait 
of Canso. A like parallelism of the latter with the harbours(Fjords) 
of the Atlantic coast of Nova Scotia and our hypothetical par- 
allels, led me to regard the Strait as, to a certain extent at least, 
formed by glacial action. This view seems to be farther sup- 
ported by the occurrence of “glacial grooves,” having a north 
and south course, observed by Fletcher at Eddy Point, Guysboro. 
County, N. S., in the mouth of the Strait of Canso. On our way 
