110 Lieut. Baddeley on the geognosy 
the black aggregate that has been described, where it not only 
predominates but in which the felspar is very subordinate. In 
this aggregate the felspar is always grey and scaly, and bears a 
great resemblance to quartz, for which it might easily be mis- 
taken, but its fusibility before the blow pipe into a white bleb- 
by glass is a sufficient distinction. As might be supposed, when 
in association with syenite, the trap usually exhibits a striking 
contrast as to colour, to which the weathered surface of the for- 
mer rock answers as a sort of foil. No difficulty would be felt 
in assigning to this rock a place among the “ hornblende schists” 
of Maculloch, were it not for its unstratified appearance in some 
places, and particularly for its intrusive and interfering character 
in others ; the latter indeed seems to point out the * overlying 
class” of the same author as its proper position. When quartz 
enters, as it does rarely, among the constituents of syenite, 
either syenitic granite or syenitic gneiss is produced : it is the 
Jatter, when by the arrangement of its hornblende in parallel 
seams, that peculiar foliated structure which characterises gneiss 
is the result. 
Neither from Mr. Proulx’s nor our own observations are we 
able to state with certainty the prevailing dip of the strata on 
the shores of the Saguenay, but it lies between the east and the 
west round by the south. We have before alluded to the diffi- 
culty of always determining the stratification, a difficulty which 
is common to many stratified rocks, but particularly to the mas+ 
ses under consideration which, from their felspathose structure 
and association with trap dykes, often sufficiently continuous to 
resemble strata, present flat even surfaces, and other superficial 
and linear appearances, by which the hasty or inexperienced 
examiner may be frequently deceived. 
Water-worn pieces of limestone, among the earliest of the se- 
condary class, were noticed in Ha-Ha Bay, and a singular 
trough-shaped mass, composed almost entirely of a grey carbo. 
nats 
