314 



Kiiomlfrts Jamcs rivcr an extensive view is afforded to 

 the south across the low-lying area of the 

 Limestone series to the southern uplands of 

 "Devonian" and older strata. 



9 • 4 m. James River Station — Alt. 203 feet (61-9 m.) . 



15- 1 km. The front of the uplands bordering the low area 

 of the Limestone series on the north, strikes 

 about southwest and a short distance beyond 

 James river the railway enters the abruptly 

 rising upland area by way of the deepset valley 

 of Hartshorne brook. This valley and its 

 continuation to the west, is underlain by 

 Silurian strata forming a narrow strip rarely 

 wider than f mile (0-4 km.) bounded on both 

 sides by a high, plateau-like upland occupied 

 by Ordovician strata belonging in part to the 

 James River formation and in part to the younger 

 Baxter Brook formation which consists of 

 reddish and greenish slates, and sandstones 

 and conglomerates. The Silurian measures 

 in places are fossiliferous and include shales, 

 sandstones and limestones. 



About 2| miles (4 km.) from the entrance to 

 Hartshorne brook valley, the head of the valley 

 is reached and the railway crosses a low summit 

 (altitude, 451 feet or 137-5 rn-) separating 

 Hartshorne valley from another valley drained 

 by a small stream flowing westward to Barney 

 river. Hartshorne brook as far as its head, 

 occupies a pronounced, though narrow, deep- 

 set valley. At the summit and on the divide, 

 the valley contracts; to the west of the summit, 

 the valley quickly widens, though still narrow, 

 and is occupied by a small westerly-flowing 

 brook whose volume is altogether dispropor- 

 tionate to the depth of the valley. 



13-3 m. Marshy Hope Station — Alt. 373 ft. (121-9 



21-4 km. m.). At Marshy Hope station, the east branch 

 of Barney river, flowing from the north, enters 

 the valley traversed by the railway, at a point 

 about I mile (1-6 km.) west of the summit. 

 The tributary valley of the east branch of 

 Barney river is very narrow and steep walled 

 whereas the main valley through also narrow. 



