70 HONEYMAN — OH THE GEOLOGY OP NOVA SCOTIA. 



there is a sino^ular meetino^ of rocks. Above the fall strata in the 

 river itself, there is an exposure of greenstone, which passes into 

 the bank of the river. Between the river and Cameron's brook 

 there is greenstone, which forms a considerable eminence over 

 against the factory, on the side of the brook, and up the brook, 

 until it comes up to the New Glasgow road. South of the falls are 

 Medina sandstone strata, with their peculiar petraia and lingular. 

 Passing along the New Glasgow road towards Sutherland's river, 

 on the left of the road, the greenstone which originates above the 

 falls on the right side of the road, and overlying the greenstone, 

 are Medina strata, with lenticular beds of orthids^ Buch as are found 

 in similar beds in McDonald's cove, Arisaig ; and also beds of 

 athp'us, as at Lochaber. Overlying these at the old road, near 

 where it is cut by Cameron's brook, are Clinton strata, from which 

 I got a beautifully ribbed organism, which is in the Museum of 

 the Geological Survey of Canada. Returning to the road I found, 

 opposite the school house, Clinton strata : these overlie the Medina 

 already mentioned, continued on to Sutherland's river and beyond 

 it, which forms the site of McPherson's grist mill. Under the 

 mill I found these Medina strata overlaid unconformably by lower 

 carboniferous grits, — the latter butting against the former. Pass- 

 ing on towards the falls we find, in these sandstones in the bed of 

 the river, a salt spring, the favourite resort of cattle ; these may be 

 seen congregating here from all quarters. Invalids may also be 

 seen following their example, in the belief that the spring is, like 

 quack medicine, omnipotent for the cure of all diseases. Overlying 

 the Medina strata, and south of it, are Clinton strata. The former 

 is exposed on either side of the bridge, and the latter above it, — 

 both are fossiliferous. Farther south, up a branch of a small brook 

 that enters Sutherland's river, above the bridge, is a considerable 

 fall, ( Eraser's. ) The rock of the fall is Medina formation . Pass- 

 ing along the bridge towards Blue Mountain, my attention was 

 turned to lofty banks on the left side of the road. As soon as I 

 saw them I was struck with the resemblance they bore to the strata 

 of my Barney's River lingula nodule bed. I made up my mind to 

 collect similar nodules out of them, and they forthwith turned up 

 in considerable abundance, of the same species as at Barney's 



