of a part of the Saguenay Couniry. 115 
portage to that of I’Islet is still more rocky, and on that account 
bas obtained the name of portage des Roches : Ona rounded 
mass of syenitein the middle of this portage, an observation for 
Jatitude was taken, which gave 48, 14. 31. 
At the north western extremity of the portage des Roches, 
lake Kenwangomi commences. No opportunity occurred of 
examining any of the rocks upon this lake until we had advan- 
ced about two miles beyond Sandy Point, when a projecting 
point of rock afforded more specimens of syenite. A short 
distance beyond, a fine grained aggregate was met with, com- 
posed of gray quartz and gray felspar, slightly freckled by 
hornblende, of a greenish colour, the felspar being distin- 
guished from the quartz, by the brilliant reflection of light 
from the polished faces of its minute crystals, Further on rocks 
were met within which felspar of a flesh-red, dark grey and 
greenish colour was in great excess ; hornblende was also pre- 
sent, but in a very subordinate degree, chiefly in patches. The 
felspar was here in beautiful distinct crystals projecting from 
the rock, under its usual rhomboidal form ; these were easily 
detached, and their laminar structure readily exhibited by the 
tlightest percussion. Magnetic iron was found in some parts 
of the rock, which strongly affected the compass: much of the 
hornblende was also magnetic. In one of the rocks here, a 
mineral was found, which possessed the following characters : 
colour, a dark greenish brown—opaque—structure indistinct- 
ly Jaminar before the application of heat ; occasionally the la- 
minar structure is more distinct, and it then resembles mica.x— 
When pounded in the mortar, small (foursided?) scales are seen, 
having a semimetallic lustre. Inits aggregated state, its lustre 
is glimmering and semi-metallic. It is slightly magnetic be- 
fore the application of heat ; when exposed to that of a candle, 
it expands, opens like a fan and exfoliates, afier which it is 
eanly pressed by the fingers into small flexible but unelastic 
ecalee 
