52 



BEITISH MOSSES. 



and what is more, to the successive existence of forests, each 

 in its order living above the buried remains of the earlier ones . 

 The following table will show the order of succession in 

 the different species of trees in some of the places where 

 this has been observed, the braces representing the co- 

 existence of the trees : 



3 w 

 o 



02 O W 



S W 



