VOLCANIC ACTIVITY OF LASSEN PEAK 



299 



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I'iG. 4. Gkadual Enlabgeme.nt of thk F1H8T C'KATER DinioLoi'KD OX Lassf.x Peak 

 DuKiNG THE Eruptions of 1914. (a) (above) the new crater on June 4, 1914. 

 I'hotogi-aph by R. H. Boerker. (Below) (b) the crater on .July 25, 19)4. 



notcli in the northern end suggested that the movement was likely to 

 continue. 



The winter's snow had largely disappeared, although the trail still 

 passed over deep snow^ banks for nearly a mile in crossing the plateau- 

 like shoulder at the south base of the peak proper. Near the top of the 

 mountain snow was to be found only in patches and beneath the cover- 

 ing of ashes. Such areas moist from the melting snow, from a distance 

 appeared almost black in comparison with the light gray of the dry 

 dust found over the greater part of the mountain. This dust was so 

 fine that it was easily moved by the wind. At times a strong gust 

 would send immense clouds into the air, giving the appearance of an 



