322 



^iomeu-t= ^^ '^^^ ^S^ °^ "^^^ ^°^^ Measures as stated by 

 Dawson, or even younger. 



The zone of "Devonian" strata lying north 

 of the belt of the "Conglomerate series" is 

 quite narrow where crossed by the valley of 

 Folly river. Beyond the Devonian, occurs a 

 complex of igneous rocks that with a length in 

 an east and west direction of about lOO miles 

 (i6o km.) forms the central part of the Cobequid 

 hills. Where traversed by the railway, the 

 igneous complex has not been studied petro- 

 graphically but is known to contain many 

 types including granite, diabase, and fine-grained 

 acid and basic intrusive rocks. Areas of 

 schistose rocks, in part of sedimentary origin, 

 are associated with the igneous rocks. 



The railway enters Folly valley at a consider- 

 able elevation above the river but in a compara- 

 tively short distance, as a result of the steep 

 gradient of the valley bottom, the railway track 

 and the stream possess the same altitude. The 

 river rises in Folly lake (altitude 605 feet or 

 184-4 m.) along whose eastern shore the railway 

 runs. The upper part of the valley, to the head 

 of Folly lake, is comparatively broad and the 

 hills on either side rise gradually to heights of 

 100 to 200 feet (30 to 60 m.) above the valley. 



Numerous cuttings in igneous rocks occur 

 along the railway. 



108-8 m. Folleigh Station— Alt. 618 ft. (188-4 m.). 



175-1 km. Folleigh station is situated near the head of 

 Folly lake. Beyond the end of the lake, the 

 valley contracts and the railway crosses a low 

 divide (altitude 618 feet or 188-4 rn-) and 

 enters the valley of a northward flowing brook, 

 the headwaters of Wallace river. As the divide 

 is left behind, the valley broadens and rapidly 

 deepens so that the railway tracks run high on 

 the valley side. Before reaching Wentworth 

 station the valley opens widely and the hills on 

 either side sink abruptly to lower levels. To 

 the north an extensive view is displayed over a 

 low rolling country stretching northward to 

 Northumberland strait. A band of strata of 



