NOVA SCOTIAN GEOLOGY. — HONEYMAN. 197 



We proceed onward to Mr. Mclver's at the back of Cameron's 

 mountain, no outcrops appeared. We then descended Mclver's 

 Brook proceeding northward, no strata were seen for a consider- 

 able distance, at length strata appeared in great mass which 

 were found to be our Silurian (A) strata succeeded by B crossing 

 the brook to proceed westward as mountain strata, including 

 Sutherland's mountain of our section. Their boldness, and hard- 

 ness of A, have constituted them mountain rocks. Sutherland's 

 mountain strata are tilted; fossils abound in them, such as Arisaig > 

 and quartz veins are also abundant. 



A great proportion of the mountain consists of Diorite. It is 

 well exposed on the back of the mountain reaching nearly to its 

 summit. This is the usual association in Nova Scotia, east and 

 west. In Antigonish, Pictou, Annapolis and Digby counties, 

 strata A of the upper Arisaig series are invariably associated 

 with intrusive Diorite. Succeeding this band are B. & B' strata, 

 these contrast strikingly with the preceding. They are generally 

 very soft furnishing the pencil stone of How's Mineralogy of 

 Nova Scotia ; when exposed they become clay. The lower strata 

 contain my "Lingula nodule bed." As usual at my last visit I ex- 

 tricated a great number of nodules from its two exposures. 

 These contain beautiful linguloe of several species. B' strata as 

 usual furnish a great variety of genera and species peculiar to 

 our Clinton period. They will be found included in our lists of 

 fossils in the sequel. The west branch of Barney's River is the 

 approximate boundary of this Middle Silurian area. The Car- 

 boniferous begins in the river at the mill north of McPhee's 

 Silurian (A) strata. At Dewar's Furniture Factory strata B ex- 

 tended beyond the river. Between Robertson's and the Rev. Mr. 

 McKeehan's, the carboniferous mountains south of Piedmont 

 Valley, have their extremity on the east. This apparent intrusion 

 into the Middle Silurian originally led me to infer a connection 

 with Cameron's mountain already referred to. 



Antigonish and Pictou Mountains. 



From McPhee's extremity of A (Middle Silurian strata) I cross- 

 ed the Middle Silurian and then the Carboniferous, and reach- 

 ed the old mountain road at Bailey's Brook. At the bridge and 



