22G 



THE NATIONAL GEOGRAPHIC MAGAZINE 





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THE EDGE OF THE CHARCOAI, FOREST ABUTTING UNINJURED TREES ABOVE THE 

 EDGE OF THE ONCE FIERY TORRENT (SEE PAGE 229) 



Photographs by R. F. Griggs 



STUMPS OF TREES BURNED OFF BY THE HOT SAND-FLOW J EXPOSED BY EROSION 



Near the terminus of the flow, where this picture was taken, the sand had so far cooled as 

 not to burn the trees clear to the ground. 



