April, 1919] 



Beginnings of Revegetation 



339 



KATMAI A VERY WINDY COUNTRY. 



Unfortunately the weather records taken by the Govern- 

 ment do not include measurements of wind velocity, so that 

 there are no data for giving exact statements concerning the 

 winds. The best that one can do therefore is to report some 



Photograph by Robert F. Griggs 



A SNOWDRIFT BLANKETED BY ASH. 



The insulating power of the ash is indicated by the fact that the snow beneath 



did not melt for five years. Wind-blown ash so retards the melting of 



the snow throughout the heavily covered country as to lower 



the altitude of the line of permanent snow fields. 



