HONEYMAN — ON GEOLOGY OF NEW BRUNSWICK. 457 



already observed on the northern side, and as indicated in our 

 geological map. Instead of this I found the carboniferous sand- 

 stone lying almost flat upon the granite with only a few feet of 

 rotten granite intervening. I must, however, in justice state, that 

 while the Atlas map of the Canadian Survey inserted a broad 

 lower silurian band between the granite and the carboniferous, I 

 afterwards found that the arrangement was well understood, as it is 

 well described in the volume accompanying the Atlas. Geology of 

 Canada, page 451. 



The granite of the Bough Waters is fine grained. The consti- 

 tuents are the same as of the porphyritic granite of the higher 

 waters. The large crystals of red feldspar only are absent. The 

 arrangement of the formations ascending the Nepisiguit as far as 

 the Grand Falls, is — 



Carboniferous, Sandstones, &c. 



? Granites, 



Lower Silurian, Slates, Schists, &c. 



I would observe in regard to the age of the granites : — There 

 can be no question that they are pre-carboniferous ; the arrange- 

 ment at Rough Waters proves this. If we regard them as intrusive 

 then they may be of Middle or Upper Silurian, or Devonian age. 

 I regard them as of the same age as the granite near Purcell's Cove 

 and other localities on the North West Arm, Halifax. Halifax 

 granite is sometimes porphyritic, having large crystals of white 

 feldspar, — both seem to be bedded. If Halifax granite is a Lauren- 

 tian gneiss, so is that of Nepisiguit. Both are associated with 

 Lower Silurian (metamorphic.) In the western extension of this 

 granite, Mr. Robb, of the Canadian Survey, considers that he has 

 convincing proof that the granite is igneous. I can produce many 

 cases at Halifax where such a conclusion seems to be inevitable. 



The Rough Waters, the Pabineau Falls and the Grand Falls 

 have given the Nepisiguit fame as a resort of the angler. 



The extension of the rocks, which we have been examining on 

 St. John River and its tributaries, and the Miramichi River, has 

 been the sphere of the operations of Mr. Robb, of the Canadian 

 Geological Survey. 



