NOTES ON GLACIAL ACTION—HONEYMAN. 255 
cemented together by the oxide of iron derived from the pyrite 
of the argillites which chiefly constitute the Breccia. Sections 
indicated the Breccia filling the hollows of the underlying argil- 
lites. 
PURCELL’S COVE. 
Here we have an island at its entrance which has a very ferru- 
ginous aspect. To all appearances it is composed of debris. 
Its position near the entrance to the N. West Arm, suggests its 
origin. It seems to have been formed from the scooped material 
of the N. West Arm. Masses detached show that it is largely 
conglomerate cemented with oxide of Iron. 
These show that glacial agency may also form conglomerates, 
and Breecias as well as marine agencies which have been chiefly 
employed in this work. 
In my Paper, Session 1886-7, I gave a list of characteristic 
boulders of the “ Amygdaloidal Drift” exhibited at the Centen- 
nial Exhibition, Philadelphia. I would now give the same with 
. subsequent additions. 
ARCHAAN. 
1. Granites. 
— hornblendie. 
Syenites. 
Diorites. 
— magnetitie. 
Gneisses. 
— magnetitic 
Porphyrites. 
SILURIAN. 
2. Quartzite, olive-coloured with crinoids. 
CARBONIFEROUS. 
3. Limestones. 
Bituminous. 
Fossiliferous (fauna) Brachiopoda, &c. 
Sandstones (yellow.) 
