1883.J NATURAL SCIENCES OF PHILADELPHIA, 259 



ver^^ rough condition. A bole in the ground indicates the place 

 where a tree formerly stood, while a pile of earth alongside 

 denotes the place where the roots of the prostrated tree trans- 

 ported and deposited the soil that was in the hole. Large fields 

 may be seen, the surfaces of which are almost wholly broken up 

 into holes and piles of eai'th, b}" the prostration of trees. 



