GENER.\L CONDITIONS 



17 



have dumped piles of detritus scraped off from the northern slopes 

 of the mountains. The composition of the soil varies with the 

 geological history of the region. In the north it is of glacial 



Fig. 4. Distiibution of Ite Northern Hardwood and White Pine T>-pes 



origin, usually a loam with many boulders. South of the con- 

 tinental terminal moraine the soil is mainly derived from the 

 decomposition of the underlying rock. But whatever its origin 



