FERN HABITATS. 



if some giant hand had scattered the rocky hills around, 

 and thrown the debris into the valley. Here and there 

 tiny rills trickle down from the higher rocks to the river 

 below, and in many a moist position, in rocky hollows 



between rock and rock, and on the crest of the stony 

 surfaces, the Filmy Ferns form dense carpetings. Veri- 

 table carpetings they are, for the fibrous roots and the 

 extensively creeping rhizomas of the ferns are so thick 

 D 2 



