82 Lieut, Baddeley on the geognosy 
called Kenwangomishish by a species of dividing ridge about half 
a mile wide, which separates the waters flowing southward di- 
rectly into the Saguenay, from those which, by pursuing a 
northerly course, first enter Lake St. John; a topographical 
feature of rather unusual occurrence.* 
We will not further anticipate what will appear in the body 
of the essay, but without more preamble, will now proceed 
with the description of the rocks which were met with on the 
route, in the order they came under observation, trusting that 
it may afford the experienced geologist the means of fixing 
their geological positition,—an attempt we have seldom pre; 
sumed tosmake, and where made, it is with the diffidence and 
hesitation compatible with our want of experience and know- 
ledge on the subject. 
The rocks on the Island of Orleans, wherever we have 
seen them, are composed of alternating strata of clay-slate and 
grey wacke. At Patrick’s Hole, which was reached about 10 
A. M. of the 6th August, these rocks appear alternating with 
each other, in very distinct strata, the dip of which, when not 
vertical, is either to the east or west, at an angle of from 609 
to 85°. Here the grey wacke predominates, and rising be- 
yond the hin strata of clay-slate, owing to the greater resist- 
ance the former opposes to the action of weathering, forms on 
the shore natural low stone walls, parallel toeach other. It is 
probable that a good building material may be procured at this 
place. 
As the term wacke has been applied very loosely to rocks of 
very different characters, we will here describe the mineral con- 
tents, 'c. of the one to which we have applied this name :— 
Its 
* For further information on this interesting tract of country, consult the 
reports of the gentlemen before mentioned, but particularly those of the 
House of Assembly, elicited through the exertions of Andrew Stuart, Esq., 
to which indeed we are indebted for all that is known of the country. See 
also article 4 of this work. 
