HONEYMAN — GEOLOGY OF ANTIGOXISIIE COUNTY. 53 



tlie north side it skirts sections of B strata — on the south it washes 

 strata of limestone. 



This limestone is of lower carboniferous age — it is part of an 

 isolated patch. A continuance of the section shows an outcrop of 

 conglomerate of the same age underlying it and trap following. 

 This insertion among pre-carboniferous rocks seems peculiar. 



Proceeding we have a considerable width of brown porphyry. 

 This terminates a great exposure of diorite which rises boldly on 

 the east. This diorite as well as that of McNeil's Brook and 

 Doctor's Brook sections is ferruginous. Some have represented 

 these as mountains of iron. Passing over to an elevation on the 

 right, covered with small wood, we reach the red slate band ; cross- 

 ing this we have a band of diorite. We descend a steep well and 

 crossing " Bruin's Highway," we have an equally steep and much 

 greater ascent of precipitous slate and quartzite. We are on the 

 side of McDougall's Mountain — climbing still farther the summit 

 is reached — 1000 feet above the sea level. 



The summit rock upon which Bayfield's cairn stands is petro- 

 silex. The last rock exposed is a hard jaspideous conglomerate 

 Ash. Beyond all is obscure. 



Section 6th. — Frenchman's Barn to McDonald's Mountain. 



In the sea north of the Frenchman's Barn (rock), trap is seen 

 rising. This is a continuation of the trap of two last sections. The 

 Frenchman's Barn is a huge oblong mass of Jaspideous rock — 

 being strata A porcellanized by the trap. It is pervaded by veins 

 of quartz and bari/te. After the jaspideous strata there come 

 slates. These have a width of feet. 



Next come shales B. Shales are seen outcropping on the 

 south side of the road and in a depression to the west through 

 which the road passes. On the elevated ground all is obscure until 

 Doctor's Brook is reached. In the brook there is an outcrop of 

 strata B' of the southern side of the syncline. 



Ascending we have an obscure interval, outcrops of diorite on 

 either side indicate a continuation in our section. Then come red 

 and gray slates — these have a width of feet. Succeeding is 



