gg LABRADOR 



forces which set the earth's crust writhing so long ago, and 

 so built one of earth's earliest mountain-systems. 

 Rather, then, to raise the question than to declare an 



FIG. 13. 

 Sketch map showing mountain trends in eastern North America. 



answer to it, the writer has prepared the diagram of Figure 13, 

 embodying a tentative conclusion, the result of observa- 

 tions at some twenty-five localities on "the Labrador." 



