Vegetation of Northern Cape Breton. 



437 



bogs in the lowland. In the highland the substratum underlying 

 the raised bogs is practically impervious granite rock, bare, or 

 thinly covered by a gravelly soil. 



n 1— c 





Figure 65.— Diagrammatic representation of a bog complex in the bar- 

 rens ; see text. A. Sketch map showing relation of area to adjoining 

 upland. B. & C. Longi-sections along line a-i on map. Section A 

 drawn to scale ; in section B, vertical scale eight times the horizontal, and 

 contour of rock floor indicated by dotted line. All measurements in feet 

 Arrows indicate location of soundings. Mountains west of Ingonish. 



