Photograph by J. W. Shipley 



THE TRAIL THROUGH THE TALL GRASS ALONG THE WEST BANK 



OF KATMAI RIVER. 



Representative of conditions in the fourth zone where the trees were killed but 

 the ashfall was so light that the grass quickly recovered. 



Photograph by R. F. Griggs 

 HORSETAIL WAIST DEEP IN THE DEAD FOREST OF UKAK VALLEY 



The ashfall was here about two feet deep, sufficient to smother the grass and all 



other geophilous plants except Equisetum arvense, which covers the 



hillsides for miles in unparalleled luxuriance. 



