HONEYMAN GEOLOGY OF ANT1GONISHE COUNTY. 51 



sional exposures of slates and quartzites to a distance of feet. 



We come to a porphyry similar to the preceding — we have reached 

 McNeil's Mountain. This is a large boss of red syenite, having an 

 elevation as has already been observed, of 1010 feet. On the south 

 side of the mountain the ground is swampy, beyond is wilderness. 

 The distance of this mountain from our point of departure is two 

 miles. 



Section 3rd. — McNeil's Brook. 



At the mouth of the brook on the shore there is exposed a patch 

 of strata, having a low dip. These are fossiliferous, the fossils 

 indicating G. of the upper series. 



Along the brook to the south all is obscure until we reach the 

 diorite of the preceding sections. Passing through this, a straight 



distance of then comes the band of red slates of preceding 



sections. In these I found patches of calcite, but no fossils. 



From this the brook passes eastward to the last section. 



Section 4th. — Doctor's Brook to Mcintosh's Mountain. 



On the shore and a little way up the brook, trap is crossed. 

 From the miller's house to the height above the mill, and on either 

 side of the mill dam, great and even picturesque exposures of sin- 

 gularly mixed and indescribable rocks are seen, which are regarded 

 as metamorphosed sedimentary rocks, of A of the Upper Arisaig 

 series. Succeeding there is a band of slaty rocks of A or Mayhili 

 Sandstone age, having characteristic fossils. These have a width 

 (thickness) of feet. After this there are black shales, (lami- 

 nated), having graptolites, and a large concretion. These have a 

 width of 146 feet. To a farther distance of 192 feet there are 

 black shales and slates. These have lingulce and other fossils. 

 This is B of the Upper Arisaig series. 



We have still in the section at the side of the road and the 

 brook, 47 feet of elates — lithologically dissimilar. These are also 

 fossiliferous. I regard these as the lower part of B'. 



Continuing the section we have an obscure interval of lofty 

 banks, having a hard rock jutting into the brook. This is probably 



