nONEYMAN — ON THE GEOLOGY OF NOYA SCOTIA. 71 



River. I crossed the fields until I came to Sutherland's river. I 

 found a fine section of the shales on the river, with the nodules 

 rolling out of them. In the shales were abundance of concretions, 

 similar to those of the black grapolite and lingula shales of Doc- 

 tor's brook, Ai'isaig. This is the only locality that I have found 

 havino[ shales identical with the lower Clinton of Arisaioc. This 

 resemblance of the river shales to those of Doctor's brook, and the 

 striking resemblance of the banks on the side of the road to the 

 lingida beds of Barney's River, enabled me at once to settle 

 beyond dispute the horizon of the Barney's River lingula bed, 

 which I had before done with some miso^ivino^s. The section 

 of black lingula shales is a little below the place where a small 

 brook that crosses the road enters the river. South of this exposure 

 of shales, on the west side of the river, rises a hill, where there is an 

 outcrop of greenstone porphyry. Still farther south, or about two 

 miles in a straight line from the bridge at the mill, is a mountain of 

 considerable elevation, called McDonald's mountain. The northern 

 side of the mountain is porphyry, and the south is metamorphic 

 glate, — the two terminate on the east side in a noble blufif, which 

 is easily distinguishable from the bridge. I have not surveyed on 

 the west side of Sutherland's river beyond this mountain. Entering 

 Sutherland's river to the east of the mountain, and descending it a 

 little way, I found lower Helderberg strata, with characteristic 

 fossils. The river course is almost in the line of the strike. These 

 rise in the bed of the river in magnificent forms, making rapids and 

 waterfalls which made me somewhat tremulous when attempting to 

 examine them. This is, without exception, the most imposing 

 display that I have witnessed of lower Helderberg strata. I would 

 advise every Geological student to make a pilgrimage to this Geo- 

 logical shrine. They can be seen to advantage by making a descent 

 into the river directly opposite the first porphyry elevation, south of 

 the lingula shale section. The strata under examination pass out 

 of the river below the falls, crossing the little stream referred to 

 when describing the lingula shale section, making in this strata 

 a deep fall, a little below the Blue Mountain road. When 

 I examined it there had been a clearing just made, and a mill 

 was in process of erection. These strata then cross the road and 



