'9^ Geology of the Montmorenci — Einmons. 
'it is a mere local derangement limited to a few rods, but from what is 
said in the preceding paragraphs it will be seen that there is very little 
doubt of its extending south along in the direction of the Beauport road 
.and that the places where the Trenton limestone .appears or the black 
slate is found projecting upward in an inclined position, we are on the 
iine of this fault. But this is not all.. We are led to believe, from facts 
which have been accumulating for several years, that it extends much 
farther south and is to be found pursuing nearly a north and south course 
jnto the state of Vermont, and may be particularly traced on a line con- 
necting Johnson's mountain in lower Canada, several points on the Mis- 
sisque bay adjacent to the provincial line, and also at the remarkable 
uplift at Snake mountain, in Addison, Vt. A line uniting those points and 
several others in the same direction, marks the line of a great disturbance 
which has deranged the lower transition rocks for at least four hundred 
miles. It may be that this line of derangement is not continuous, and 
4f continuous there are evidently many pointsjwherethe force producing 
it was much greater at some than at others, and which has resulted in 
the projection of several mountain masses continuous only for a few 
miles, all of which are on this line, and in this geological formation, and 
along which we find a remarkable uniformity in the accompanying 
phenomena. Many of tiiese mountain masses are represented on the 
■i)est maps of Canada, V^ermont and NeAv York, and they may be dis- 
tinguished from the Green mountains, as they appear merely as outliers 
in that remarkable range. 
I do not propose to go into the proof of the whole doctrine which is 
advanced in this essay, in relation to this extended line of derangement; 
the space allotted is too limited, and besides the required details are un- 
suitable to the character of this magazine. There remains one or two 
important inquires which may with propriety be placed before the reader 
before I close, as they are connected with and related to the views which 
have been expressed in this paper. The first is, may not the great 
fault which I have supposed to extend through Lower Canada, Vermont 
and New York, have caused the confusion in the writers on Geology in 
regard to the lower transition rock, particularly the Hudson river slates 
and shales.? May not the same derangement exist in England and 
Wales, and have been the cause, at least in part, of their separation 
irom the Silurian system, and of their being considered as one distinct 
therefrom, and which has been called the Cambrian system.' 
In this state it seems to be established that we have these rocks (the 
slates, &c., of Hudson river) in two positions, the horizontal and the in- 
clined. They occur in the former position at Pulaski, Lorraine, Rodman, 
and Pinckney, and they are conformable both in position and fossils to 
the so-called Silurian sysem. Again they occur in Rensselaer and Wash- 
ington counties in Vermont, and the entire lengih of Lower Canada, in 
an inclined position. Through this great extent of country they are 
mineralogically the same as the Pulaski and Lorraine shales, and differ 
from them only in their inclined position. But over this great extent 
