86 



FIRST YEAR SCIENCE 



by imperceptible stages into it. This kind of soil is called 

 local or sedentary soil. 



In other localities the coarseness of the soil does not 

 materially change as we dig into it, but suddenly we come 

 upon the surface of the bed rock, which may contain few 

 if any of the constituents which were in the soil. This 

 soil, which in no way resembles the underlying rock, is 

 called transported soil. We shall find out later how most 

 of it reached its present position. 





DIGGING PEAT IN IRELAND. 

 Peat is cut in small brick-like squares and dried, before being used as fuel. 



The first kind of soil has evidently been made in some 

 way from the rock below, since it gradually shades into 

 this rock. This kind of soil changes with the change of 

 the bed rock. A striking illustration occurs in Kentucky, 

 where the rich and fertile " Blue Grass " region is bounded 



