236 On the Geography and Geology 



considerable veins of white quartz. This mixed form of granite 

 exists all over this district ; but is particularly distinct at the Cape 

 7 miles north of Point INIarmoaze, about Point Huggewong, and 

 at the first headland, north of Gargantua. The granular granite, 

 not at all, or but little, mixed with the porphyritic, obtains in 

 large quantities, forming some of the heights of Huggewong Bay, 

 and the bluffs of the shores north of that bay, one of whose hills 

 I ascended, and found to be composed of this kind at all levels. 

 But a great part of this granite, besides containing hornblende 

 disseminated promiscuously, is associated with this mineral in 

 three additional modes — intermixed confusedly, and covering both 

 large and small spaces. It receives from the hornblende a lamellar 

 structure, by alternating with it in very thin plates more or less 

 continuously, the direction (with contortions and wavings,) being 

 usually E.N.E., the dip either perpendicular, or N.N.W. at an 

 high angle, as about Montreal and Gravel Rivers, and at the south 

 angle of the bottom of Huggewong Bay. Near Gravel River the 

 direction is also EbN. and E. dipping northerly, and close by this 

 spot, for several acres, an apparent displacement gives a N.N.E. 

 direction, bounded, on both sides, by the same rocks, passing 

 E.N.E. and N.E. The N.N.E. direction of these laminas exists 

 also at a principal bluff a few miles south from the Montreal 

 River, with great confusion in the contiguous layers. Hornblende 

 occurs too, in irregular-imbedded masses, from two to twenty-five 

 yards square, traversed by few or by many veins of granite from 

 one to ten feet thick, in the most fantastic manner imaginable. 

 These are very abundant. They are seen as bowlders on the 

 portage at the Falls of St. Mary. The hornblende in these cases is 

 sometimes pure, though rarely, it being almost always intimately 

 and plentifully mixed with grains of white quartz so disposed as 

 to impart a slightly lamellar structure. The third form in which 

 hornblende appears in this granite is, what may be interleaved, 

 beds of greenstone, varying in thickness from a few feet to an 

 hundred yards. It is most common on the south skirts of Hug- 

 gewong Bay, and from Huggewong Point to Gravel River. This 

 greenstone never shews any tendency to slatiness, and is fine 



