1()S LOWEi; SIMruiAN OF CAPE BRETON — GILPIN. 



Hiul are represented in Victoria Count}' onl^- by a small outcrop 

 near Cape Dauphin, referred with doulit, in the absence of fossil 

 evidence, to this age. 



A long narrow band runs from Moore's Brook, in St. 

 Andrew's Channel (Little Bras d'Or) along the shore to the 

 mouth of McLeod's Brook, which it ascends to its source, and 

 then follows Indian Brook down until within a mile of its 

 mouth, at the Chapel on the Escasonic Indian Reserve on East 

 Bay. Except at Owl's Brook, this band is no wliere over a mile 

 in width. Long Island is entirely composed of the slates and 

 limestones of this group. At the Long Island, Barasois and 

 McSween's Brook there is an unconformable capping of conglom- 

 erate. At Dugald's Point the conglomerate completely obscures 

 it, and rests upon the Boisdale felsites. No exposure of the 

 Silurian strata is visible for several miles, until Maclean's Beach 

 is reached, where it reappears as a narrow strip between the 

 Laurentian and Conglomerate. This outcrop terminates at Shen- 

 acadie, but a small outlier is visible about a mile to the west- 

 ward. Similar outliers occur on East Bay, near the mouths of 

 Mackintosh and Bown's Brooks. 



At the head of East Bay, these strata outcrop again resting on 

 the syenitic masses of the Coxheath Hills, and are in turn 

 obscured by the Carboniferous conglomerate. The northern edge 

 of this exposure runs from the foot of Gillis Lake, and passes a 

 little South of McAdams Lake and continues to a point on the 

 East Bay road about one mile west of the bridge over Spruce 

 Brook. This strip is about a mile wide in the centre and gradu- 

 ally narrows at each end. 



The greatest development of this horizon, however, is met in 

 the Mira River district, and here it has been carefully traced and 

 minutely described by Mr. Fletcher of the Canadian Geological 

 Survey. 



The Mira River forms its northern boundary until a point on 

 the northern bank is reached, about two miles east of Marion 

 Bridge, where the formation is met on the north side of the river, 

 covering a tract of land nearly square and about three miles 

 broad. The next exposure on the north side of the river is met 



