350 



Aquatic Societies 



Some habitual associates of sphagnum are shown in 

 figure 207. In such a place as the foreground of this 

 picture, if one slice the bog cover with a hay-knife, he 



Fig. 207. A bit of bog cover. (McLean, N. Y.). From the central clump 

 of pitcher-plant leaves rises one long-stalked flower. The surrounding bog 

 moss is Sphagnum. A few slender stems of cranberry trail over the moss. 

 The taller shrubs are mainly heaths such as Cassandra and Andromeda. 



{Photo by H. H. Knight.) 



may easily lift up the slices; for they are composed of 

 living material to a depth of only about a foot. Below 

 is peat; at first light colored and composed of identifi- 

 able plant remains, but, deeper, becoming darker and 

 more completely disintegrated. The slices cut from 



