Plate VI. 



4^- 



Fig-. 1. Young blowout in the Hanover area, looking north, indicating the differentiation of 

 three associations. Detached bunches of Paiiiciim fseKdopiibcsrcns at the left, mark the windward 

 slope; the deposits at the right are occupied with Pain'riim -•irgaliim: while the basin has as yet 

 no vegetation. 



Fig. 2. Accrat.s viridiflora, var. lanceolaia, in its typical habitat. 



