EXPLANATION OF PLATES. 



Fig. I. Relief drawing of Mount Ktaadn as seen from the 

 south. 



Fig. 2. A view on the "Saddle" showing the Alpine-Tundra in 

 the foreground and the Krmnmholz islands beyond. The height 

 of the trees is shown by the camera case standing upon the crown 

 of a prostrate spruce. The xerophytic structure of the Krumm- 

 holz is clearly shown. The rocks rising through the mat are 

 covered with lichens. 



Fig. 3. The "Saddle," North Mountain, and the Northern 

 Ridge beyond from the north slope of West peak. The covering 

 of the Central Mountain by the Krummholz, its extension far up 

 toward the northern summits, and its encroachment upon the 

 Alpine-Tundra, are clearly shown. The conditions along the 

 east brow of the "Saddle" are to be noted (cf. Fig. 2). 



Fig. 4. General view on the "Saddle" showing the extension 

 of the Krummholz passing without interruption down the west 

 slope. View looking northwest from north slope of West peak. 

 The point of the Northern Ridge is seen at the right and the 

 Sourdnahunk Mountains beyond. 



Fig. 5. "Avalanche-timber-line" at the base of the precipitous 

 east wall of the South Basin. Chimney Pond in foreground. 



Reprinted from Rhodora j: 1902. 



Fig. 6. At the base of the northeast wall of the North Basin 

 are seen the Alpestrine meadow societies. At the right is the 

 "pioneer-stage" in which Campanula rotundifolia is dominant. 

 At the left is the "meadow-stage" which follows the pioneer 

 society. It has here reached up to the very base of the dripping 

 walls. 



OF THE 



UNIVERSITY 



OF 



