162 Lieut. Baddeley on the geognosy 
tion was found onthe shore of lake St. John, near and to the 
westward of the Post of Mitabitshuan: it was angular and of 
an untravelled aspect. 
The felspar rock (sui generis) alluded to, is one, many of 
those characters resemble those of Labrador felspar from which 
it differs principally by its want of iridescence. It forms the 
north eastern shore of Lake St. John, and its islands from the 
mouth of La Grande Décharge, to within a mile of the Kou- 
couathime river, and was met with by Mr. Nixon in La Petite 
Décharge ; also uninterruptedly forming a rocky bank from 
the foot of the first rapid in the Peribonea river, to the great 
falls on the same. We can say nothing of its rock associations, 
as they were not seen. It will probably fall under the gene- 
ral term syenite, although hornblende is a very rare ingredient 
in it. 
Magnetic iron occurs in such extensive beds in rear of St. 
Paul’s Bay, as to entitle it to be considered asa rock. It was 
met with in abundance ir no other place. 
Clay-slate, in association with grey wacke, was met with 
on the Island of Orleans, Both are well known to be very 
abundant in Lower-Canada, particularly in the neighbourhood 
of Quebec, and fromthence towards the mouth of the St. Law- 
rence, but they are principally confined to the southern side of 
the river. Clay-slate was also met with on Lake St. John, for 
we still persist in calling by that name the rock we met with 
there, apparently alternating with fetid limestone. 
Sandstone was met with only at Mal-bay, underlying hori_ 
zontal limestone. The position of this sandstone answers to 
that of the old red sandstone, which, if it be, it is another 
instance among many of the absurdity of affixing such a name 
to a rock, which in the present instance is of a light greenish 
colour, 
Secondary limestones, among which, for convenience, we 
include, 
